ci: Run link format check on all mediawiki documents

Author: achow101

scripts/link-format-chk.sh

@@ -8,16 +8,14 @@
 
 ECODE=0
 FILES=""
-for fname in $(git diff --name-only HEAD $(git merge-base HEAD master)); do
-    if [[ $fname == *.mediawiki ]]; then
-        GRES=$(grep -n '](http' $fname)
-        if [ "$GRES" != "" ]; then
-            if [ $ECODE -eq 0 ]; then
-                >&2 echo "Github Mediawiki format writes link as [URL text], not as [text](url):"
-            fi
-            ECODE=1
-            echo "- $fname:$GRES"
+for fname in *.mediawiki; do
+    GRES=$(grep -n '](http' $fname)
+    if [ "$GRES" != "" ]; then
+        if [ $ECODE -eq 0 ]; then
+            >&2 echo "Github Mediawiki format writes link as [URL text], not as [text](url):"
         fi
+        ECODE=1
+        echo "- $fname:$GRES"
     fi
 done
 exit $ECODE