Fix typo

docs/client/concepts.html

@@ -244,7 +244,7 @@ client/oranges/           # and oranges
 
 server/apples/            # server code for apples
 server/oranges/           # and oranges
-````
+```
 
 #### Method 3: Packages
 
@@ -886,7 +886,7 @@ HTTP port for the application to listen on, and the MongoDB endpoint.
 $ cd my_directory
 $ (cd programs/server && npm install)
 $ PORT=3000 MONGO_URL=mongodb://localhost:27017/myapp node main.js
-```
+```g
 
 Some packages might require other environment variables. For example,
 the `email` package requires a `MAIL_URL` environment variable.