improve explanations for skip funcs per timotimo; remove spurious space at EOL

Author: tbrowder

doc/Language/testing.pod

@@ -435,14 +435,14 @@ else {
 }
 =end code
 
-Note that the C<skip> function and the tests to be skipped must be in
-two separate parts of an C<if/else> construct.
+Note that if you mark a test as skipped, you must also prevent that
+test from running.
 
 =item X<skip-rest($reason?)|skip-rest>
 
 Skip the remaining tests.  If the remainder of the tests in the test file
 would all fail due to some condition, use this function to skip them,
-providing an optional C<$reason> as to why. 
+providing an optional C<$reason> as to why.
 
 =begin code
 unless $location ~~ "Wimbledon Common" {
@@ -458,8 +458,10 @@ ok womble();
 Note that C<skip-rest> requires a C<plan> to be set, otherwise the
 C<skip-rest> call will throw an error. If no plan was set, you can use
 C<done> to indicate the end of the test run (though of course the test
-summary will not count skipped tests).  Note also the C<exit> is required
-to prevent the tests from executing.
+summary will not count skipped tests).  Note also the C<exit> is
+required in the example to prevent the skipped tests from running.
+Alternatively, you could enclose the remaining tests in an C<else>
+branch.
 
 =head1 Manual control