Fix several typos in the guide.

site/guide/11-conclusion.md

@@ -10,7 +10,7 @@ we're happy to take the best ideas. If you have something in mind, please
 If you find yourself having trouble developing Rocket applications, you can get
 help via chat at [`#rocket:mozilla.org`] on Matrix or the bridged [`#rocket`]
 IRC channel on Freenode at `chat.freenode.net`. We recommend joining us on
-[Matrix via Element]. If your prefer IRC, you can join via the [Kiwi IRC client]
+[Matrix via Element]. If you prefer IRC, you can join via the [Kiwi IRC client]
 or a client of your own.
 
 [`#rocket:mozilla.org`]: https://chat.mozilla.org/#/room/#rocket:mozilla.org

site/guide/4-requests.md

@@ -239,7 +239,7 @@ will be routed as follows:
   2. The `user_int` route matches next. If `<id>` is a signed integer,
      `user_int` is called. Otherwise, the request is forwarded.
 
-  3. The `user_str` route matches last. Since `<id>` is a always string, the
+  3. The `user_str` route matches last. Since `<id>` is always a string, the
      route always matches. The `user_str` handler is called.
 
 ! note: A route's rank appears in **[brackets]** during launch.

site/guide/index.md

@@ -35,7 +35,7 @@ aspect of Rocket. The sections are:
 
 The official community support channels are [`#rocket:mozilla.org`] on Matrix
 and the bridged [`#rocket`] IRC channel on Freenode at `chat.freenode.net`. We
-recommend joining us on [Matrix via Element]. If your prefer IRC, you can join
+recommend joining us on [Matrix via Element]. If you prefer IRC, you can join
 via the [Kiwi IRC client] or a client of your own.
 
 [`#rocket:mozilla.org`]: https://chat.mozilla.org/#/room/#rocket:mozilla.org