Update getFunction parameter documentation. Fixes PR13268.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159835 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html
index e00dd4a..fb2cd41 100644
--- a/docs/ProgrammersManual.html
+++ b/docs/ProgrammersManual.html
@@ -3455,8 +3455,9 @@
 <hr>
 
 <ul>
-  <li><tt><a href="#Function">Function</a> *getFunction(const std::string
-  &amp;Name, const <a href="#FunctionType">FunctionType</a> *Ty)</tt>
+
+  <li><tt><a href="#Function">Function</a> *getFunction(StringRef Name) const
+    </tt>
 
     <p>Look up the specified function in the <tt>Module</tt> <a
     href="#SymbolTable"><tt>SymbolTable</tt></a>. If it does not exist, return