Fix error

.bin/check-file-for-starting-slash

@@ -9,7 +9,7 @@ for modified_file in $modified_files
 do
   echo "[+] Check $modified_file ..."
   matches=$(grep -cE '^/[a-zA-Z0-9\._]+' $modified_file)
-  echo "Entries identified starting with a slash: matches"
+  echo "Entries identified starting with a slash: $matches"
   if [ $matches -ne 0 ]
   then
     echo "::warning file=$modified_file,line=1,col=1,endColumn=1::$matches entries start with a slash."