Merge pull request #330 from jketema/lifetime-typo

Fix typo in the lifetime profile

Author: lcartey

cpp/common/src/codingstandards/cpp/lifetimes/lifetimeprofile/LifetimeProfile.qll

@@ -198,7 +198,7 @@ newtype TPSetEntry =
   PSetNull(NullReason nr) or
   /** An invalid pointer, for the given reason. */
   PSetInvalid(InvalidReason ir) or
-  /** An unkown pointer. */
+  /** An unknown pointer. */
   PSetUnknown()
 
 /**