docs: correct comment typo in address.go (backport #16671) (#16674)

Co-authored-by: ww4tson <133960002+ww4tson@users.noreply.github.com>

types/address.go

@@ -372,7 +372,7 @@ func (va ValAddress) Equals(va2 Address) bool {
 	return bytes.Equal(va.Bytes(), va2.Bytes())
 }
 
-// Returns boolean for whether an AccAddress is empty
+// Returns boolean for whether an ValAddress is empty
 func (va ValAddress) Empty() bool {
 	return len(va) == 0
 }