[Saylinks] Convert all GM Command Saylinks to Silent Saylinks. (#2373)

* [Saylinks] Convert all GM Command Saylinks to Silent Saylinks.
- This cleans up all non-silent GM Command Saylinks that we had before due to the way they worked before. All saylinks like this should be silent now.
- Add source short hand capability for say links with same link as text.

* Defaults to r anyway.

* Spacing.

zone/dialogue_window.cpp

@@ -326,7 +326,7 @@ void DialogueWindow::Render(Client *c, std::string markdown)
 	if (responses.size() > 1) {
 		for (auto &r: responses) {
 			bracket_responses.emplace_back(
-				fmt::format("[{}]", Saylink::Create(r, false, r))
+				fmt::format("[{}]", Saylink::Create(r, false))
 			);
 		}
 	}