✏️ Fix typo in HTTP Basic auth tutorial (#514)

docs/tutorial/security/http-basic-auth.md

@@ -12,8 +12,8 @@ Then, when you type that username and password, the browser sends them in the he
 
 ## Simple HTTP Basic Auth
 
-* Import `HTTPBAsic` and `HTTPBasicCredentials`.
-* Create a "`security` scheme" using `HTTPBAsic`.
+* Import `HTTPBasic` and `HTTPBasicCredentials`.
+* Create a "`security` scheme" using `HTTPBasic`.
 * Use that `security` with a dependency in your *path operation*.
 * It returns an object of type `HTTPBasicCredentials`:
     * It contains the `username` and `password` sent.