docs: Clean up make docs on windows (influxdata#12796)

.gitattributes

@@ -3,4 +3,6 @@ README.md merge=union
 go.sum merge=union
 plugins/inputs/all/all.go merge=union
 plugins/outputs/all/all.go merge=union
-**/testdata/** test eol=lf
+
+# Always check-out / check-in files with LF line endings.
+* text=auto eol=lf

Makefile

@@ -115,9 +115,7 @@ build_tools:
 	$(HOSTGO) build -o ./tools/readme_linter/readme_linter$(EXEEXT) ./tools/readme_linter
 
 embed_readme_%:
-	GOOS=linux go generate -run="readme_config_includer/generator$$" ./plugins/$*/...
-	GOOS=windows go generate -run="readme_config_includer/generator$$" ./plugins/$*/...
-	GOOS=darwin go generate -run="readme_config_includer/generator$$" ./plugins/$*/...
+	go generate -run="readme_config_includer/generator$$" ./plugins/$*/...
 
 .PHONY: config
 config:

plugins/serializers/csv/csv_test.go

@@ -83,6 +83,8 @@ func TestSerializeTransformationNonBatch(t *testing.T) {
 			// Serialize
 			serializer, err := NewSerializer(cfg.TimestampFormat, cfg.Separator, cfg.Header, cfg.Prefix)
 			require.NoError(t, err)
+			// expected results use LF endings
+			serializer.writer.UseCRLF = false
 			var actual bytes.Buffer
 			for _, m := range metrics {
 				buf, err := serializer.Serialize(m)
@@ -149,6 +151,8 @@ func TestSerializeTransformationBatch(t *testing.T) {
 			// Serialize
 			serializer, err := NewSerializer(cfg.TimestampFormat, cfg.Separator, cfg.Header, cfg.Prefix)
 			require.NoError(t, err)
+			// expected results use LF endings
+			serializer.writer.UseCRLF = false
 			actual, err := serializer.SerializeBatch(metrics)
 			require.NoError(t, err)
 

tools/readme_config_includer/generator.go

@@ -54,7 +54,8 @@ func extractIncludeBlock(txt []byte, includesEx *regexp.Regexp, root string) *in
 		}
 		include := filepath.FromSlash(string(inc[1]))
 		// Make absolute paths relative to the include-root if any
-		if filepath.IsAbs(include) {
+		// Check original value to avoid platform specific slashes
+		if filepath.IsAbs(string(inc[1])) {
 			if root == "" {
 				log.Printf("Ignoring absolute include %q without include root...", include)
 				continue