Fixed a thinko and a typo in the --append option.

rsync.yo

@@ -723,9 +723,9 @@ receiving user.
 dit(bf(--append)) This causes rsync to update a file by appending data onto
 the end of the file, which presumes that the data that already exists on
 the receiving side is identical with the start of the file on the sending
-side.  Any files that are the same size or shorter on the receiving size
-are skipped.  Files that do not yet exist on the receiving side are also
-sent, since they are considered to have 0 length.  Implies bf(--inplace),
+side.  Any files that are the same size or longer on the receiving side
+are skipped.  Files that do not yet exist on the receiving side are
+transferred, regardless of size.  Implies bf(--inplace),
 but does not conflict with bf(--sparse) (since it is always extending a
 file's length).