Fix rendered wiki page link (#31398)

Fix #31395

routers/web/repo/render.go

@@ -47,7 +47,7 @@ func RenderFile(ctx *context.Context) {
 	rd := charset.ToUTF8WithFallbackReader(io.MultiReader(bytes.NewReader(buf), dataRc), charset.ConvertOpts{})
 	ctx.Resp.Header().Add("Content-Security-Policy", "frame-src 'self'; sandbox allow-scripts")
 
-	if markupType := markup.Type(blob.Name()); markupType == "" {
+	if markupType := markup.DetectMarkupTypeByFileName(blob.Name()); markupType == "" {
 		if isTextFile {
 			_, _ = io.Copy(ctx.Resp, rd)
 		} else {

routers/web/repo/view.go

@@ -307,7 +307,7 @@ func renderReadmeFile(ctx *context.Context, subfolder string, readmeFile *git.Tr
 
 	rd := charset.ToUTF8WithFallbackReader(io.MultiReader(bytes.NewReader(buf), dataRc), charset.ConvertOpts{})
 
-	if markupType := markup.Type(readmeFile.Name()); markupType != "" {
+	if markupType := markup.DetectMarkupTypeByFileName(readmeFile.Name()); markupType != "" {
 		ctx.Data["IsMarkup"] = true
 		ctx.Data["MarkupType"] = markupType
 
@@ -499,7 +499,7 @@ func renderFile(ctx *context.Context, entry *git.TreeEntry) {
 		readmeExist := util.IsReadmeFileName(blob.Name())
 		ctx.Data["ReadmeExist"] = readmeExist
 
-		markupType := markup.Type(blob.Name())
+		markupType := markup.DetectMarkupTypeByFileName(blob.Name())
 		// If the markup is detected by custom markup renderer it should not be reset later on
 		// to not pass it down to the render context.
 		detected := false
@@ -607,7 +607,7 @@ func renderFile(ctx *context.Context, entry *git.TreeEntry) {
 
 		// TODO: this logic duplicates with "isRepresentableAsText=true", it is not the same as "LFSFileGet" in "lfs.go"
 		// It is used by "external renders", markupRender will execute external programs to get rendered content.
-		if markupType := markup.Type(blob.Name()); markupType != "" {
+		if markupType := markup.DetectMarkupTypeByFileName(blob.Name()); markupType != "" {
 			rd := io.MultiReader(bytes.NewReader(buf), dataRc)
 			ctx.Data["IsMarkup"] = true
 			ctx.Data["MarkupType"] = markupType

routers/web/repo/wiki.go

@@ -532,7 +532,7 @@ func Wiki(ctx *context.Context) {
 	}
 
 	wikiPath := entry.Name()
-	if markup.Type(wikiPath) != markdown.MarkupName {
+	if markup.DetectMarkupTypeByFileName(wikiPath) != markdown.MarkupName {
 		ext := strings.ToUpper(filepath.Ext(wikiPath))
 		ctx.Data["FormatWarning"] = fmt.Sprintf("%s rendering is not supported at the moment. Rendered as Markdown.", ext)
 	}