Replace Riot with Element in docs and comments

This only covers the simple cases of references to issues and repos. More
complex areas, such as deployment scripts, will be handled separately.

Part of https://github.com/vector-im/element-web/issues/14864

src/settings/Settings.ts

@@ -160,7 +160,7 @@ export const SETTINGS: {[setting: string]: ISetting} = {
         default: false,
     },
     "advancedRoomListLogging": {
-        // TODO: Remove flag before launch: https://github.com/vector-im/riot-web/issues/14231
+        // TODO: Remove flag before launch: https://github.com/vector-im/element-web/issues/14231
         displayName: _td("Enable advanced debugging for the room list"),
         supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS,
         default: false,
@@ -488,13 +488,13 @@ export const SETTINGS: {[setting: string]: ISetting} = {
             deny: [],
         },
     },
-    // TODO: Remove setting: https://github.com/vector-im/riot-web/issues/14373
+    // TODO: Remove setting: https://github.com/vector-im/element-web/issues/14373
     "RoomList.orderAlphabetically": {
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
         displayName: _td("Order rooms by name"),
         default: false,
     },
-    // TODO: Remove setting: https://github.com/vector-im/riot-web/issues/14373
+    // TODO: Remove setting: https://github.com/vector-im/element-web/issues/14373
     "RoomList.orderByImportance": {
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
         displayName: _td("Show rooms with unread notifications first"),

src/settings/watchers/ThemeWatcher.ts

@@ -78,7 +78,7 @@ export default class ThemeWatcher {
     };
 
     // XXX: forceTheme param added here as local echo appears to be unreliable
-    // https://github.com/vector-im/riot-web/issues/11443
+    // https://github.com/vector-im/element-web/issues/11443
     public recheck(forceTheme?: string) {
         const oldTheme = this.currentTheme;
         this.currentTheme = forceTheme === undefined ? this.getEffectiveTheme() : forceTheme;