fixes pre-commit to work properly if more than one file is staged

pre-commit

@@ -78,7 +78,7 @@ for file in $files; do
         echo -ne "${green}✓ ${clear}"
 
         # only add the encrypted file if it was already staged
-        if grep -Fxq "$file" "$stagedFiles"; then
+        if echo "$stagedFiles" | grep -Fxq "$file"; then
             git add $file
         fi
     else