docs: add comments

Author: gunjjoshi

.github/workflows/scripts/generate_pr_commit_message

@@ -227,10 +227,12 @@ main() {
 	keywords_pattern=$(IFS='|'; echo "${closing_keywords[*]}")
 
 	for issue in $issue_numbers; do
+		# Fetch issue details:
 		issue_details=$(github_api "GET" "/repos/$REPO_OWNER/$REPO_NAME/issues/$issue")
 		issue_title=$(echo "$issue_details" | jq -r '.title')
 		issue_labels=$(echo "$issue_details" | jq -r '.labels[].name')
 
+		# Check if the issue is a tracking issue:
 		if echo "$issue_title" | grep -q "(tracking issue)" || echo "$issue_labels" | grep -q "Tracking Issue"; then
 			ref_issues+="Ref: https://github.com/$REPO_OWNER/$REPO_NAME/issues/$issue\n"
 		elif echo "$pr_body" | grep -Eiq "(${keywords_pattern})([[:space:]]+|:)[[:space:]]*#${issue}\b"; then