check actual char count in check description linter

.github/workflows/pr-desc-lint.yml

@@ -30,10 +30,10 @@ jobs:
 
           # Extract contents
           # Extract contents
-          what_changed=$(echo "$pr_description" | sed -n -e '/\*What was changed?\*/,/\*/p' | sed '$d' | sed '1d')
-          why_changed=$(echo "$pr_description" | sed -n -e '/\*Why was it changed?\*/,/\*/p' | sed '$d' | sed '1d')
-          how_changed=$(echo "$pr_description" | sed -n -e '/\*How was it changed?\*/,/\*/p' | sed '$d' | sed '1d')
-          testing_done=$(echo "$pr_description" | sed -n -e '/\*What testing was done for the changes?\*/,/\*/p' | sed '$d' | sed '1d')
+          what_changed=$(echo "$pr_description" | sed -n -e '/\*What was changed?\*/,/\*/p' | wc -c)
+          why_changed=$(echo "$pr_description" | sed -n -e '/\*Why was it changed?\*/,/\*/p' | wc -c)
+          how_changed=$(echo "$pr_description" | sed -n -e '/\*How was it changed?\*/,/\*/p' | wc -c)
+          testing_done=$(echo "$pr_description" | sed -n -e '/\*What testing was done for the changes?\*/,/\*/p' | wc -c)
 
           if [[ ${#what_changed} -lt $MIN_CHARS ]]; then
             echo "PR description for what changed section is either missing or too short."