spell identifier correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43718 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/tutorial/LangImpl4.html b/docs/tutorial/LangImpl4.html
index 8c25a04..6fb2c88 100644
--- a/docs/tutorial/LangImpl4.html
+++ b/docs/tutorial/LangImpl4.html
@@ -686,12 +686,12 @@
 static ExprAST *ParseExpression();
 
 /// identifierexpr
-///   ::= identifer
-///   ::= identifer '(' expression* ')'
+///   ::= identifier
+///   ::= identifier '(' expression* ')'
 static ExprAST *ParseIdentifierExpr() {
   std::string IdName = IdentifierStr;
   
-  getNextToken();  // eat identifer.
+  getNextToken();  // eat identifier.
   
   if (CurTok != '(') // Simple variable ref.
     return new VariableExprAST(IdName);