update docs

docs/20_Checks/check_cpu.md

@@ -22,7 +22,7 @@ If there are processes with status D they will be shown (to analyze cpu waits).
 
 ## Syntax
 
-``$ check_NAME [-c CRITICAL] [-w WARING] [-i CRITICAL_IO]``
+``$ check_cpu [-c CRITICAL] [-w WARING] [-i CRITICAL_IO]``
 
 ### Parameters
 

docs/20_Checks/check_cronstatus.md

+# Check Cronstatus
+
+## Introduction
+
+Show status of all Cronjobs using Axels Cronwrapper
+https://github.com/axelhahn/cronwrapper
+
+The last run of each job is verified to these conditions:
+
+* exitcode was 0
+* last run is younger than given TTL
+
+## Syntax
+
+`$ check_cronstatus [-h] [SCRIPT]`
+
+### Parameters
+
+```text
+OPTIONS:
+
+    -h or --help   show this help.
+
+PARAMETERS:
+
+    SCRIPT         optional: custom status script
+                   default: /opt/cronwrapper/cronstatus.sh
+```
+
+## Examples
+
+`check_cronstatus`
+    The Check of cronjobs with the default loction does not require any parameter
+
+`check_cronstatus /usr/share/cronwrapper/cronstatus.sh`
+    The Check of cronjobs with custom loction.