Fix typo in routes docs (#165)

docs/routes.md

@@ -102,7 +102,7 @@ async def async_xablau(res, req):
 # this can be async no problems
 def on_error(error, res, req):
     # here you can log properly the error and do a pretty response to your clients
-    print("Somethind goes %s" % str(error))
+    print("Something goes %s" % str(error))
     # response and request can be None if the error is in an async function
     if res != None:
         # if response exists try to send something
@@ -164,4 +164,4 @@ app.remove_server_name("*.google.*")
 
 ```
 
-### Next [Middlewares](middlewares.md)
+### Next [Middlewares](middlewares.md)