Update README.md

typo

Author: aak74

README.md

@@ -165,7 +165,7 @@ For more details on the promise cancellation, please refer to the
 
 #### Input cancellation
 
-Irrespective of the timout handling, you can also explicitly `cancel()` the
+Irrespective of the timeout handling, you can also explicitly `cancel()` the
 input `$promise` at any time.
 This means that the `timeout()` handling does not affect cancellation of the
 input `$promise`, as demonstrated in the following example: