Add wiki articles repo as a submodule

Author: jeremy-rifkin

.gitmodules

@@ -6,3 +6,6 @@
 # [submodule "dyno-import"]
 # 	path = dyno-import
 # 	url = git@github.com:TCCPP/dyno-import.git
+[submodule "wiki"]
+	path = wiki
+	url = git@github.com:TCCPP/wiki-articles.git

src/components/help.ts

@@ -51,8 +51,7 @@ export default class Help extends BotComponent {
                                 (unwrap(this.wheatley.components.get("Wiki")) as Wiki).article_aliases
                                     .map((_, alias) => `\`${alias}\``)
                                     .join(", "),
-                            "Article contributions are welcome " +
-                                "[here](https://github.com/TCCPP/wheatley/tree/main/wiki-articles)!",
+                            "Article contributions are welcome [here](https://github.com/TCCPP/wiki-articles)!",
                         ),
                     },
                     {

src/components/wiki.ts

@@ -13,7 +13,7 @@ import { Wheatley } from "../wheatley.js";
 import { TextBasedCommandBuilder } from "../command-abstractions/text-based-command-builder.js";
 import { TextBasedCommand } from "../command-abstractions/text-based-command.js";
 
-export const wiki_dir = "wiki-articles";
+export const wiki_dir = "wiki";
 
 type WikiArticle = {
     name: string | null; // basename for the article