update help for ph.getValueWithParam

docs/30_Shared_functions/inc_pluginfunctions.md

@@ -163,7 +163,7 @@ Return default value or its override from command line.
 Syntax:
 
 ```text
-ph.getFileAge VALUE PARAMNAME "$@"
+ph.getValueWithParam VALUE PARAMNAME "$@"
 ```
 
 Parameters:
@@ -176,8 +176,8 @@ Example:
 
 ```shell
 # set default / override from command line params
-typeset -i iWarnLimit=$(     ph.getValueWithParam 75 w "$@")
-typeset -i iCriticalLimit=$( ph.getValueWithParam 90 c "$@")
+typeset -i iWarnLimit;     iWarnLimit=$(     ph.getValueWithParam 70 w "$@")
+typeset -i iCriticalLimit; iCriticalLimit=$( ph.getValueWithParam 90 c "$@")
 ```
 
 This will set variable iWarnLimit based on CLI parameter -w [value] ... if it does not exist it gets the default 75.