BUGFIX: Fix ctrl-clicking after the doc_en refactor (#2256)

This refactors getPage so that the same code can be used as part of
openDocExternally. This is necessary, since looking things up in
AllPages is potentially required to determine which language-version of
the external page to link to.

src/ui/React/Documentation.tsx

@@ -1,6 +1,7 @@
 import React, { useContext, useState } from "react";
 import { type FilePath, asFilePath } from "../../Paths/FilePath";
 import { CONSTANTS } from "../../Constants";
+import { resolvePage } from "../../Documentation/root";
 
 interface Navigator {
   navigate: (s: string, external: boolean) => void;
@@ -96,10 +97,17 @@ export function openDocExternally(path: string) {
   let url;
   if (path.startsWith("http://") || path.startsWith("https://")) {
     url = path;
-  } else if (path.startsWith("nsDoc/")) {
-    url = `https://github.com/bitburner-official/bitburner-src/blob/${ver}/markdown/${path.replace("nsDoc/", "")}`;
   } else {
-    url = `https://github.com/bitburner-official/bitburner-src/blob/${ver}/src/Documentation/doc/${path}`;
+    const title = resolvePage(path).pageName;
+    if (title == null) {
+      return; // An error was already printed to console
+    }
+    url = `https://github.com/bitburner-official/bitburner-src/blob/${ver}/`;
+    if (title.startsWith("nsDoc/")) {
+      url += `markdown/${title.replace("nsDoc/", "")}`;
+    } else {
+      url += `src/Documentation/doc/${title}`;
+    }
   }
   window.open(url, "_newtab");
 }