Run a minor code quality checker over the repo (#8524)

* Run a minor code quality checker over the repo

Largely targeted at spelling of common words and misc code issues.

* Update snapshots

src/utils/permalinks/ElementPermalinkConstructor.ts

@@ -80,7 +80,7 @@ export default class ElementPermalinkConstructor extends PermalinkConstructor {
     }
 
     /**
-     * Parses an app route (`(user|room)/identifer`) to a Matrix entity
+     * Parses an app route (`(user|room)/identifier`) to a Matrix entity
      * (room, user).
      * @param {string} route The app route
      * @returns {PermalinkParts}

src/utils/permalinks/Permalinks.ts

@@ -274,7 +274,7 @@ export function makeUserPermalink(userId: string): string {
 
 export function makeRoomPermalink(roomId: string): string {
     if (!roomId) {
-        throw new Error("can't permalink a falsey roomId");
+        throw new Error("can't permalink a falsy roomId");
     }
 
     // If the roomId isn't actually a room ID, don't try to list the servers.