Apply suggestions from code review

Co-authored-by: DL6ER <DL6ER@users.noreply.github.com>
Signed-off-by: yubiuser <ckoenig@posteo.de>

advanced/Scripts/update.sh

@@ -58,7 +58,7 @@ GitCheckUpdateAvail() {
         # need @{0}
         LOCAL="$(git rev-parse "@{0}")"
 
-        # check if the local branch ef is a branch or a tag on remote repo
+        # check if the local branch ref is a branch or a tag on remote repo
         if git show-ref -q --verify "refs/remotes/origin/$curBranch" 2>/dev/null; then
             ref_is_tag=false
         elif git show-ref -q --verify "refs/tags/$curBranch" 2>/dev/null; then

automated install/basic-install.sh

@@ -478,7 +478,7 @@ update_repo() {
     # Remove any leading "heads/" as $curBranch is later used to check if local branch is remote branch or tag
     curBranch=$(git rev-parse --abbrev-ref HEAD| sed "s/^heads\///g")
 
-    # check if the local branch ef is a branch or a tag on remote repo
+    # check if the local branch ref is a branch or a tag on remote repo
     if git show-ref -q --verify "refs/remotes/origin/$curBranch" 2>/dev/null; then
         ref_is_branch=true
     elif git show-ref -q --verify "refs/tags/$curBranch" 2>/dev/null; then