[Dominators] Fix typos. NFC.

llvm-svn: 309170

Author: kuhar

llvm/include/llvm/Support/GenericDomTree.h

@@ -484,7 +484,7 @@ class DominatorTreeBase {
   /// This function has to be called just after making the update
   /// on the actual CFG. There cannot be any other updates that the dominator
   /// tree doesn't know about. The only exception is when the deletion that the
-  /// tree is informed about makes some (domominator) subtree unreachable -- in
+  /// tree is informed about makes some (dominator) subtree unreachable -- in
   /// this case, it is fine to perform deletions within this subtree.
   ///
   /// Note that for postdominators it automatically takes care of deleting

llvm/include/llvm/Support/GenericDomTreeConstruction.h

@@ -705,7 +705,7 @@ struct SemiNCAInfo {
 
     TreeNodePtr MinNode = ToTN;
 
-    // Identify the top of the subtree to rebuilt by finding the NCD of all
+    // Identify the top of the subtree to rebuild by finding the NCD of all
     // the affected nodes.
     for (const NodePtr N : AffectedQueue) {
       const TreeNodePtr TN = DT.getNode(N);