[analyzer] Fix a typo in docs

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@352468 91177308-0d34-0410-b5e6-96231b3b80d8

lib/StaticAnalyzer/Checkers/CheckerDocumentation.cpp

@@ -215,7 +215,7 @@ public:
 
   /// Evaluates function call.
   ///
-  /// The analysis core threats all function calls in the same way. However, some
+  /// The analysis core treats all function calls in the same way. However, some
   /// functions have special meaning, which should be reflected in the program
   /// state. This callback allows a checker to provide domain specific knowledge
   /// about the particular functions it knows about.