fix: failing backend tests (go-gitea#9310)

The tests introduced by go-gitea#9181 are updated to match the new behaviour of go-gitea#9182.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/9310
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Robert Wolff <mahlzahn@posteo.de>
Co-committed-by: Robert Wolff <mahlzahn@posteo.de>

Author: mahlzahn

modules/markup/html_test.go

@@ -1202,7 +1202,7 @@ func TestRender_FilePreview(t *testing.T) {
 		`</table>` +
 		`</div>` +
 		`</div>`
-	linkRendered := `<a href="` + commitFileURLFirstLine + `" rel="nofollow"><code>eeb243c339/path/to/file%20%23.txt (L1)</code></a>`
+	linkRendered := `<a href="` + commitFileURLFirstLine + `" rel="nofollow"><code>eeb243c339/path/to/file #.txt (L1)</code></a>`
 
 	t.Run("file with strange characters in name", func(t *testing.T) {
 		testRender(