docs: Relax regex in identifier match in list-man-pages.sh

Function, struct and enum identifiers are allowed to have digits in
their name, just not as first character. Relax the regex accordingly.

Reported-by: Lee Duncan <[email protected]>
Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

doc/list-man-pages.sh

@@ -3,14 +3,14 @@
 
 file=$1
 
-for func in $(sed -n 's/ \* \([a-z_]*\)() -.*/\1/p' $file); do
+for func in $(sed -n 's/ \* \([a-z_][a-z_0-9]*\)() -.*/\1/p' $file); do
 	echo ${func}
 done
 
-for struct in $(sed -n 's/ \* struct \([a-z_]*\) -.*/\1/p' $file); do
+for struct in $(sed -n 's/ \* struct \([a-z_][a-z_0-9]*\) -.*/\1/p' $file); do
 	echo ${struct}
 done
 
-for enum in $(sed -n 's/ \* enum \([a-z_]*\) -.*/\1/p' $file); do
+for enum in $(sed -n 's/ \* enum \([a-z_][a-z_0-9]*\) -.*/\1/p' $file); do
 	echo ${enum}
 done