'main': Change the issue a test is associated with.

Issue #202 is too overloaded.

Author: danielshahaf

highlighters/main/test-data/alias-to-dir.zsh

@@ -32,5 +32,5 @@ alias x=/
 BUFFER=$'x'
 
 expected_region_highlight=(
-  '1 1 unknown-token "issue #202"' # x (/)
+  '1 1 unknown-token "issue #668"' # x (/)
 )