✏ Fix small typo in `docs/en/docs/tutorial/security/first-steps.md` (#4515)

Co-authored-by: Sebastián Ramírez <[email protected]>

docs/en/docs/tutorial/security/first-steps.md

@@ -121,7 +121,7 @@ When we create an instance of the `OAuth2PasswordBearer` class we pass in the `t
 ```
 
 !!! tip
-    here `tokenUrl="token"` refers to a relative URL `token` that we haven't created yet. As it's a relative URL, it's equivalent to `./token`.
+    Here `tokenUrl="token"` refers to a relative URL `token` that we haven't created yet. As it's a relative URL, it's equivalent to `./token`.
 
     Because we are using a relative URL, if your API was located at `https://example.com/`, then it would refer to `https://example.com/token`. But if your API was located at `https://example.com/api/v1/`, then it would refer to `https://example.com/api/v1/token`.