Fix a test error

Author: davidanthoff

test/test_document.jl

@@ -133,6 +133,5 @@ end
     links = LS.DocumentLink[]
     LS.find_document_links(LS.getcst(doc), doc, 0, links)
     @test length(links) == 1
-    # lowercase because windows drives can apparently be inconsistently capitalized
-    @test lowercase(links[1].target) == lowercase(LS.filepath2uri(@__FILE__))
+    @test links[1].target == LS.filepath2uri(@__FILE__)
 end