reverse return code in ph.hasParamoption

docs/20_Checks/inc_pluginfunctions.md

@@ -186,7 +186,7 @@ This will set variable iWarnLimit based on CLI parameter -w [value] ... if it do
 
 ### ph.hasParamoption
 
-check if a letter was used as command line option and return as 0 (=no) or 1 (=yes)
+check if a letter was used as command line option and return as 0 (=true) or 1 (=false)
 
 Syntax:
 
@@ -201,10 +201,12 @@ Parameters:
 
 Example:
 
+Show a help if command line param ``-h`` was given - or no parameter.
+
 ```bash
-bOptHelp=`ph.hasParamoption "h" "$@"`
+ph.hasParamoption "h" "$@" ; bOptHelp=$?
 
-if [ $bOptHelp -eq 1 -o $# -lt 1 ]; then
+if [ $bOptHelp -eq 0 -o $# -lt 1 ]; then
     _usage
     exit 0
 fi