Fix a grammaro.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99917 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html
index 9d00756..46fd33f 100644
--- a/docs/ProgrammersManual.html
+++ b/docs/ProgrammersManual.html
@@ -3080,7 +3080,7 @@
   <dt><tt><a name="FunctionType">FunctionType</a></tt></dt>
   <dd>Subclass of DerivedTypes for function types.
     <ul>
-      <li><tt>bool isVarArg() const</tt>: Returns true if its a vararg
+      <li><tt>bool isVarArg() const</tt>: Returns true if it's a vararg
       function</li>
       <li><tt> const Type * getReturnType() const</tt>: Returns the
       return type of the function.</li>