Merge pull request #109 from vrurg/path-to-raku

Clarify the situation with .t extension

solutions/language/PATH-TO-RAKU.md

@@ -149,9 +149,9 @@ will continue to be supported for 6.e.  In 6.f, the `.pm`, `.pm6` and `.pod6`
 extensions could be marked as DEPRECATED, causing a message to be generated
 when the module is loaded.
 
-For testing, the extension `.rakutest` should be used, while the old `.t`
-extension will continue to be supported for 6.e, with deprecation messages
-appearing from 6.f onward.
+For testing, the extensions `.rakutest` and `.t` should be used, while the
+extension `.t6` will continue to be supported for 6.e, with deprecation
+messages appearing from 6.f onward.
 
 On Windows, installers should add a `.raku` association alongside the `.p6`
 association for the time being. Around the time of 6.f, a `.p6` association