Update test fixtures to use string descriptions where tested

Author: rmosolgo

test/graphql-docs/fixtures/gh-schema.graphql

@@ -3759,7 +3759,7 @@ type ProjectEdge {
 
 # Ways in which lists of projects can be ordered upon return.
 input ProjectOrder {
-  # The direction in which to order projects by the specified field.
+  "The direction in which to order projects by the specified field."
   direction: OrderDirection!
 
   # The field in which to order projects by.

test/graphql-docs/fixtures/named-root-schema.graphql

@@ -2,6 +2,6 @@ schema {
   query: RootQuery
 }
 type RootQuery {
-  #Do a thing
+  "Do a thing"
   thing: [String!]!
 }

test/graphql-docs/fixtures/tiny-schema.graphql

@@ -20,7 +20,7 @@ scalar URI
 type Query {
   # Look up a code of conduct by its key
   codeOfConduct(
-    # The code of conduct's key
+    "The code of conduct's key"
     key: String!
   ): CodeOfConduct
 }

test/graphql-docs/generator_test.rb

@@ -137,7 +137,6 @@ def test_that_it_sets_classes
   end
 
   def test_that_named_query_root_generates_fields
-    skip("graphql 2.2.0+ causes this to fail")
     options = deep_copy(GraphQLDocs::Configuration::GRAPHQLDOCS_DEFAULTS)
     options[:output_dir] = @output_dir
 
@@ -197,7 +196,6 @@ def test_that_markdown_preserves_whitespace
   end
 
   def test_that_empty_html_lines_not_interpreted_by_markdown
-    skip("graphql 2.2.0+ causes this to fail")
     options = deep_copy(GraphQLDocs::Configuration::GRAPHQLDOCS_DEFAULTS)
     options[:output_dir] = @output_dir
 
@@ -210,7 +208,6 @@ def test_that_empty_html_lines_not_interpreted_by_markdown
   end
 
   def test_that_non_empty_html_lines_not_interpreted_by_markdown
-    skip("graphql 2.2.0+ causes this to fail")
     options = deep_copy(GraphQLDocs::Configuration::GRAPHQLDOCS_DEFAULTS)
     options[:output_dir] = @output_dir