Update tutorial to reflect the current APIs. Also correct a small omission in

LangImpl6.html (it needed to defined the 'binary :' operator).
PR9052


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142123 91177308-0d34-0410-b5e6-96231b3b80d8

docs/tutorial/LangImpl2.html

@@ -801,10 +801,10 @@ course.)  To build this, just compile with:</p>
 
 <div class="doc_code">
 <pre>
-   # Compile
-   g++ -g -O3 toy.cpp 
-   # Run
-   ./a.out 
+# Compile
+clang++ -g -O3 toy.cpp
+# Run
+./a.out 
 </pre>
 </div>