[GITEA] Fix orgmode link resolver for text descriptions

- It's possible that the description of an `Regularlink` is `Text` and not
another `Regularlink`. Therefor if it's `Text`, convert it to an
`Regularlink` trough the 'old' behavior (pass it trough `org.String` and
trim `file:` prefix).
- Adds unit tests.
- Resolves https://codeberg.org/Codeberg/Community/issues/1430

(cherry picked from commit 385fc6ee6be25859066a716aa15be09991e2d33c)

modules/markup/orgmode/orgmode_test.go

@@ -80,6 +80,12 @@ func TestRender_Media(t *testing.T) {
 		`<p><img src="https://example.com/example.svg" alt="https://example.com/example.svg" /></p>`)
 	test("[[https://example.com/example.mp4]]",
 		`<p><video src="https://example.com/example.mp4">https://example.com/example.mp4</video></p>`)
+
+	// Text description.
+	test("[[file:./lem-post.png][file:./lem-post.png]]",
+		`<p><a href="http://localhost:3000/gogits/gogs/lem-post.png"><img src="http://localhost:3000/gogits/gogs/lem-post.png" alt="http://localhost:3000/gogits/gogs/lem-post.png" /></a></p>`)
+	test("[[file:./lem-post.mp4][file:./lem-post.mp4]]",
+		`<p><a href="http://localhost:3000/gogits/gogs/lem-post.mp4"><video src="http://localhost:3000/gogits/gogs/lem-post.mp4">http://localhost:3000/gogits/gogs/lem-post.mp4</video></a></p>`)
 }
 
 func TestRender_Source(t *testing.T) {