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/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/MemoryByteBlock.java

@@ -286,7 +286,7 @@ public class MemoryByteBlock implements ByteBlock {
 	 * it should return 0. A natural alignment only exists if there is some underlying indexing
 	 * structure that isn't based at 0. For example, if the underlying structure is address based
 	 * and the starting address is not 0, then the natural alignment is the address offset mod the
-	 * radix (if the starting address is 10 and the radix is 4, then then the alignment is 2)).
+	 * radix (if the starting address is 10 and the radix is 4, then the alignment is 2)).
 	 */
 	@Override
 	public int getAlignment(int radix) {

Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/format/ByteBlock.java

@@ -151,7 +151,7 @@ public interface ByteBlock {
 	 * there is some underlying indexing structure that isn't based at 0.  For example,
 	 * if the underlying structure is address based and the starting address is not 0,
 	 * then the natural alignment is the address offset mod the radix (if the starting
-	 * address is 10 and the radix is 4, then then the alignment is 2)).
+	 * address is 10 and the radix is 4, then the alignment is 2)).
 	 */
 	public int getAlignment(int radix);
 }