update elements and fix some bugs

lib/src/prism/tests/languages/elixir/keyword_feature.test

Index: lib/src/prism/tests/languages/elixir/keyword_feature.test
diff --git a/lib/src/prism/tests/languages/elixir/keyword_feature.test b/lib/src/prism/tests/languages/elixir/keyword_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..e1b02a1ae3cffee2d4ffb84fd3f1b5f57a5fcae2
--- /dev/null
+++ b/lib/src/prism/tests/languages/elixir/keyword_feature.test
@@ -0,0 +1,31 @@
+after alias and case
+catch cond def
+defcallback
+defexception
+defimpl defmodule
+defp defprotocol
+defstruct do else
+end fn for if
+import not or
+require rescue try
+unless use when
+
+----------------------------------------------------
+
+[
+	["keyword", "after"], ["keyword", "alias"], ["keyword", "and"], ["keyword", "case"],
+	["keyword", "catch"], ["keyword", "cond"], ["keyword", "def"],
+	["keyword", "defcallback"],
+	["keyword", "defexception"],
+	["keyword", "defimpl"], ["keyword", "defmodule"],
+	["keyword", "defp"], ["keyword", "defprotocol"],
+	["keyword", "defstruct"], ["keyword", "do"], ["keyword", "else"],
+	["keyword", "end"], ["keyword", "fn"], ["keyword", "for"], ["keyword", "if"],
+	["keyword", "import"], ["keyword", "not"], ["keyword", "or"],
+	["keyword", "require"], ["keyword", "rescue"], ["keyword", "try"],
+	["keyword", "unless"], ["keyword", "use"], ["keyword", "when"]
+]
+
+----------------------------------------------------
+
+Checks for all keywords.