Fix a bit of nonsense.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129073 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/WritingAnLLVMPass.html b/docs/WritingAnLLVMPass.html
index 97db123..fe93a87 100644
--- a/docs/WritingAnLLVMPass.html
+++ b/docs/WritingAnLLVMPass.html
@@ -751,7 +751,7 @@
 
 <p> <tt>LoopPass</tt> subclasses are allowed to update loop nest using
 <tt>LPPassManager</tt> interface. Implementing a loop pass is usually
-straightforward. <tt>Looppass</tt>'s may overload three virtual methods to
+straightforward. <tt>LoopPass</tt>'s may overload three virtual methods to
 do their work. All these methods should return true if they modified the 
 program, or false if they didn't. </p>
 </div>
@@ -829,7 +829,7 @@
 
 <p> <tt>RegionPass</tt> subclasses are allowed to update the region tree by using
 the <tt>RGPassManager</tt> interface. You may overload three virtual methods of
-<tt>RegionPass</tt> to implementing your own region pass is usually. All these
+<tt>RegionPass</tt> to implement your own region pass. All these
 methods should return true if they modified the program, or false if they didn not.
 </p>
 </div>