Fix workflow

.github/workflows/main.yml

@@ -52,7 +52,7 @@ jobs:
           # Find all source files you care about
           INCLUDE_REGEX='^.*\.((((c|C)(c|pp|xx|\+\+)?$)|((h|H)h?(pp|xx|\+\+)?$))|(ino|pde|proto|cu))$'
           CHECK_PATH='src'
-          files=$(find "$CHECK_PATH" -name .git -prune -o -regextype posix-egrep -regex "$INCLUDE_REGEX" -print
+          files=$(find "$CHECK_PATH" -name .git -prune -o -regextype posix-egrep -regex "$INCLUDE_REGEX" -print)
           
           # Run clang-format in dry-run mode and collect any improperly formatted files
           failed=0