Fix minor typo

Signed-off-by: XhmikosR <xhmikosr@gmail.com>

advanced/Scripts/piholeDebug.sh

@@ -302,7 +302,7 @@ compare_local_version_to_git_version() {
             remotes=$(git remote -v)
             log_write "${INFO} Remotes: ${remotes//$'\n'/'\n             '}"
 
-            # If the repo is on the master branchs, they are on the stable codebase
+            # If the repo is on the master branch, they are on the stable codebase
             if [[ "${remote_branch}" == "master" ]]; then
                 # so the color of the text is green
                 log_write "${INFO} Branch: ${COL_GREEN}${remote_branch}${COL_NC}"