Many typo's

These were found using the command below searching for duplicated words,
and manually going through the results to remove the false positives and
reword the true positives. Sometimes I removed the doubled word and
sometimes I replaced the duplicated word.

The grep command:
grep -nIEr '\b([a-zA-Z]+)[[:space:]*]+\1\b' ./Ghidra

Ghidra/Framework/Help/src/main/java/help/GHelpSet.java

@@ -46,7 +46,7 @@ import help.validator.JavaHelpValidator;
  * Further, it does not properly locate the shared HTML file reference.  This class allows lookups
  * across modules by overridden the lookup functionality done by the map object.  More specifically,
  * we override {@link #getCombinedMap()} and {@link #getLocalMap()} to use a custom delegate map
- * object that knows how do do this "cross-module" help lookup.
+ * object that knows how to do this "cross-module" help lookup.
  * 
  *
  *@see GHelpHTMLEditorKit

Ghidra/Framework/Help/src/main/java/help/OverlayHelpTree.java

@@ -172,7 +172,7 @@ public class OverlayHelpTree {
 		//
 		// The parent to children map is cleared as nodes are created.   The map is populated by
 		// adding any references to the 'parent' key as they are loaded from the help files.
-		// As we build nodes, starting at the root, will will create child nodes for those that
+		// As we build nodes, starting at the root, we will create child nodes for those that
 		// reference the 'parent' key.   If the map is empty, then it means we never built a
 		// node for the 'parent' key, which means we never found a help file containing the
 		// definition for that key.