Fix typo 'langauge'.

LICENSE

@@ -224,7 +224,7 @@ Software.
 ==============================================================================
 Software from third parties included in the Carbon language:
 ==============================================================================
-The Carbon langauge contains third party software which is under different
+The Carbon language contains third party software which is under different
 license terms. All such code will be identified clearly using at least one of
 two mechanisms:
 1) It will be in a separate directory tree with its own `LICENSE.txt` or