fix starting h1

docs/20_Checks/_index.md

-# Checks
-
-## Shared functions
-
-There is one include script used by all checks:
-[inc_pluginfunctions](inc_pluginfunctions.md)
-
 ## Check scripts
 
 * [about](about.md)

docs/20_Checks/about.md

-# About
+## About
 
-## Introduction
+Script: `about`
 
 This check shows a short summary for the current system.
 Its status is always OK.

docs/20_Checks/check_apache_requests.md

-# Check_apache_requests
+## Check_apache_requests
 
-## Introduction
+Script: `check_apache_requests`
 
 After requesting the apache servre status page you get 
 

docs/20_Checks/check_ceph_diskfree.md

-# Check Ceph diskfree
+## Check Ceph diskfree
 
-## Introduction
+Script: `check_ceph_diskfree`
 
-**check_ceph_diskfree** is a plugin to show the available and free diskspace.
+It is a plugin to show the available and free diskspace.
 It returns a single line for the status, data and performance data.
 
 ## Requirements

docs/20_Checks/check_ceph_io.md

-# Check Ceph IO
+## Check Ceph IO
 
-## Introduction
+Script: `check_ceph_io`
 
-**check_ceph_io** is a plugin to show read and written bytes per second. 
+It is a plugin to show read and written bytes per second. 
 It returns a single line for the status and performance data.
 
 ## Requirements

docs/20_Checks/check_ceph_osd.md

-# Check Ceph OSDs
+## Check Ceph OSDs
 
-## Introduction
+Script: `check_ceph_osd`
 
 Show cheph osd status: how many OSDs exist and how many are up/ down.
 This check sends performance data.

docs/20_Checks/check_ceph_status.md

-# Check Ceph Status
+## Check Ceph Status
 
-## Introduction
+Script: `check_ceph_statusbb`
 
 **check_ceph_status** is a plugin to show ceph status.
 It switches the state in dependency of the HEALTH_* value.

docs/20_Checks/check_clientbackup.md

-# Check Client backup
+## Check Client backup
 
-## Introduction
+Script: `check_clientbackup`
 
 **check_client_backup** is a plugin to show the backup status of IML Backup.
 

docs/20_Checks/check_couchdb.md

-# check_couchdb
+## Check_couchdb
 
-## Introduction
+Script: `check_couchdb`
 
 Check couchdb status.
 

docs/20_Checks/check_cpu.md

-# check CPU
+## Check CPU
 
-## Introduction
+Script: `check_cpu`
 
-**check_cpu** is a plugin to check cpu usage and cpu io wait.
+It is a plugin to check cpu usage and cpu io wait.
 It reads cpu data from output of top command and shows
 
    hwi - Time spent handling hardware interrupt routines. (Whenever a peripheral unit want attention form the CPU, it literally pulls a line, to signal the CPU to service it)

docs/20_Checks/check_cronstatus.md

-# Check Cronstatus
+## Check Cronstatus
 
-## Introduction
+Script: `check_cronstatus`
 
 Show status of all Cronjobs using Axels Cronwrapper
 

docs/20_Checks/check_disk_io.md

-# CHECK_DISK-IO
-
-## Introduction
+## CHECK_DISK-IO
 
 **check_disk-io** is a plugin to show io, ticks and wait time.
 It shows a multiline output and sends performance data.

docs/20_Checks/check_dns_responsetime.md

-# CHECK_DNS_RESPONSETIME
-
-## Introduction
+## CHECK_DNS_RESPONSETIME
 
 **check_dns_responsetime** check dns response time of all dns servers found in local /etc/resolv.conf
 

docs/20_Checks/check_docker_info.md

-# CHECK_DOCKER_INFO
-
-## Introduction
+## CHECK_DOCKER_INFO
 
 **check_docker_info_** shows the docker version and count of containers.
 You get the count of containers by state running, paused or stopped.

docs/20_Checks/check_docker_stats.md

-# CHECK_DOCKER_STATS
-
-## Introduction
+## CHECK_DOCKER_STATS
 
 **check_docker_stats** shows the docker resources of containers.
 This check sends performance data.

docs/20_Checks/check_dockercontainer_top.md

-# CHECK_DOCKERCONTAINER_TOP
-
-## Introduction
+## CHECK_DOCKERCONTAINER_TOP
 
 **check_dockercontaeiner_top** shows the docker top output for each container.
 

docs/20_Checks/check_eol.md

-## check EOL
-
-### Introduction
+## Check EOL
 
 **check_eol** is a plugin for Icinga/ Nagios. It detects the end of life of an OS or a product.
 
@@ -10,7 +8,7 @@ The status is "unknown" if a product or the eol date was not detected.
 
 It is customizable / extendable to detect other products that are not included in the delivered basic config.
 
-### Syntax
+## Syntax
 
 ```txt
 ./check_eol
@@ -60,7 +58,7 @@ EXAMPLES
 
 ```
 
-#### Parameters
+### Parameters
 
 PRODUCT  set a product; known product keys are listed below
 VERSION  set a version.
@@ -70,12 +68,12 @@ VERSION  set a version.
   You can set "os" as product to detect the (linux) distribution.
   See examples below.
 
-#### Options
+### Options
 
   -c  set critical limit; default 90
   -w  set warning limit; default 365
 
-### Examples
+## Examples
 
 ``check_eol php 7.4``
     Show end of life for given php version 7.4
@@ -89,7 +87,7 @@ VERSION  set a version.
 ``check_eol php detect``
     Show the end of life for the detected php version
 
-### Extend/ customize
+## Extend/ customize
 
 The check is build to be customizable. You can add
 
@@ -116,7 +114,7 @@ detect-postgres*
 detect-ruby*
 ```
 
-#### End of life dates
+### End of life dates
 
 The dates are defined in the files *check_eol-*.cfg*.
 Those contain lines with parsed information that must start at the begin of line:
@@ -156,7 +154,7 @@ website https://www.centos.org/
 Limit Info: warn below 365 days; critical below 90 days
 ```
 
-#### Files
+### Files
 
 * check_eol-data/os.cfg - contains eol dates for debian, centos, ubuntu
 * check_eol-data/check_eol-databases.cfg - Mariadb, PostgreSql
@@ -166,7 +164,7 @@ You can add your custom products and dates - it just must match *check_eol-*.cfg
 
 Suggestion: *check_eol-data/custom-[my category].cfg*
 
-#### Version detection
+### Version detection
 
 If you use ``check_eol [product] [version]`` with an already known version in your monitoring check then the search for an eol date is done directly in the *cfg files (see above).
 

docs/20_Checks/check_fs_errors.md

-# Check filesystem errors
-
-## Introduction
+## Check filesystem errors
 
 **check_fs_errors** checks if kernel logs inconsistency messages in the journallog.
 It requires sudo permission on /bin/journalctl

docs/20_Checks/check_fs_writable.md

-# Check writable filesystem
-
-## Introduction
+## Check writable filesystem
 
 **check_fs_writebale** checks in the given directories a file can be touched.
 The response is critical of one of the directory is not writable for the icinga client user. 

docs/20_Checks/check_gitlab_tokens.md

-# Check Gitlab tokens
-
-## Introduction
+## Check Gitlab tokens
 
 **check_gitlab_tokens** checks all newer tokens of projects and groups if they expire soon. You can set a warning and a critical level in days.