✏️ Fix typo (#941)

docs/help-fastapi.md

@@ -1,4 +1,4 @@
-Are you liking **FastAPI**?
+Do you like **FastAPI**?
 
 Would you like to help FastAPI, other users, and the author?
 

docs/tutorial/handling-errors.md

@@ -1,8 +1,8 @@
-There are many situations in where you need to notify an error to the client that is using your API.
+There are many situations in where you need to notify an error to a client that is using your API.
 
-This client could be a browser with a frontend, the code from someone else, an IoT device, etc.
+This client could be a browser with a frontend, a code from someone else, an IoT device, etc.
 
-You could need to tell that client that:
+You could need to tell the client that:
 
 * The client doesn't have enough privileges for that operation.
 * The client doesn't have access to that resource.