Fix gofmt hook, exclude .txt files

Author: sanderploegsma

.pre-commit-config.yaml

@@ -1,5 +1,6 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
+exclude: \.txt$
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v5.0.0
@@ -17,6 +18,6 @@ repos:
         files: \.v$
       - id: gofmt
         name: format .go files
-        entry: go fmt
-        language: system
+        entry: gofmt -w -l
+        language: golang
         types: [go]