fix typo noticed by Joshua Pennington


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44522 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/tutorial/LangImpl4.html b/docs/tutorial/LangImpl4.html
index 378b29b..5a41f51 100644
--- a/docs/tutorial/LangImpl4.html
+++ b/docs/tutorial/LangImpl4.html
@@ -583,7 +583,7 @@
   if (LastChar == '#') {
     // Comment until end of line.
     do LastChar = getchar();
-    while (LastChar != EOF && LastChar != '\n' & LastChar != '\r');
+    while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
     
     if (LastChar != EOF)
       return gettok();