fix: path letter case (#506)
diff --git a/themes/docsy/layouts/projectDoc/baseof.html b/themes/docsy/layouts/projectDoc/baseof.html
index 2d64fea..0844fc5 100644
--- a/themes/docsy/layouts/projectDoc/baseof.html
+++ b/themes/docsy/layouts/projectDoc/baseof.html
@@ -39,7 +39,7 @@
         $('.td-sidebar').toggleClass('active')
       })
       $('.version-select').on('change', function (){
-        var selectVersion = $(this).val();
+        var selectVersion = $(this).val().toLowerCase();
         var prefix = '';
         var url = location.href.replace(/(\/docs\/[a-zA-Z\-]+\/)([\w|\.]+)(\/.*)/, function (match, p1, p2, p3){
           prefix = p1 + selectVersion;