fix(parsers): add additional typescript filetype to parser

Fixes https://github.com/nvim-treesitter/nvim-treesitter/issues/181

lua/nvim-treesitter/parsers.lua

@@ -147,6 +147,7 @@ list.tsx = {
     files = { "src/parser.c", "src/scanner.c" },
     location = "tree-sitter-tsx/tsx"
   },
+  used_by = { "typescript.tsx" },
   filetype = 'typescriptreact'
 }