patch 9.0.0110: help tag generation picks up words in code examples

Problem:    Help tag generation picks up words in code examples.
Solution:   Skip over examples. (Carlo Teubner, closes #10813)
diff --git a/src/testdir/test_help.vim b/src/testdir/test_help.vim
index ff06b0f..30c0b9d 100644
--- a/src/testdir/test_help.vim
+++ b/src/testdir/test_help.vim
@@ -141,6 +141,13 @@
   call assert_equal(["help-tags\ttags\t1"], readfile('Xdir/tags'))
   call delete('Xdir/tags')
 
+  " Test parsing tags
+  call writefile(['*tag1*', 'Example: >', '  *notag*', 'Example end: *tag2*'],
+    \ 'Xdir/a/doc/sample.txt')
+  helptags Xdir
+  call assert_equal(["tag1\ta/doc/sample.txt\t/*tag1*",
+                  \  "tag2\ta/doc/sample.txt\t/*tag2*"], readfile('Xdir/tags'))
+
   " Duplicate tags in the help file
   call writefile(['*tag1*', '*tag1*', '*tag2*'], 'Xdir/a/doc/sample.txt')
   call assert_fails('helptags Xdir', 'E154:')