Fix rendering ReST rendering in docstrings (#86)

Author: hoefling

src/graphql/utilities/ast_from_value.py

@@ -45,15 +45,17 @@ def ast_from_value(value: Any, type_: GraphQLInputType) -> Optional[ValueNode]:
     A GraphQL type must be provided, which will be used to interpret different Python
     values.
 
-    | JSON Value    | GraphQL Value        |
-    | ------------- | -------------------- |
-    | Object        | Input Object         |
-    | Array         | List                 |
-    | Boolean       | Boolean              |
-    | String        | String / Enum Value  |
-    | Number        | Int / Float          |
-    | Mixed         | Enum Value           |
-    | null          | NullValue            |
+    ================ =======================
+       JSON Value         GraphQL Value
+    ================ =======================
+       Object          Input Object
+       Array           List
+       Boolean         Boolean
+       String          String / Enum Value
+       Number          Int / Float
+       Mixed           Enum Value
+       null            NullValue
+    ================ =======================
 
     """
     if is_non_null_type(type_):

src/graphql/utilities/value_from_ast.py

@@ -36,15 +36,17 @@ def value_from_ast(
     Returns `Undefined` when the value could not be validly coerced according
     to the provided type.
 
-    | GraphQL Value        | JSON Value    | Python Value |
-    | -------------------- | ------------- | ------------ |
-    | Input Object         | Object        | dict         |
-    | List                 | Array         | list         |
-    | Boolean              | Boolean       | bool         |
-    | String               | String        | str          |
-    | Int / Float          | Number        | int / float  |
-    | Enum Value           | Mixed         | Any          |
-    | NullValue            | null          | None         |
+    =================== ============== ================
+       GraphQL Value      JSON Value     Python Value
+    =================== ============== ================
+       Input Object       Object         dict
+       List               Array          list
+       Boolean            Boolean        bool
+       String             String         str
+       Int / Float        Number         int / float
+       Enum Value         Mixed          Any
+       NullValue          null           None
+    =================== ============== ================
 
     """
     if not value_node:

src/graphql/utilities/value_from_ast_untyped.py

@@ -15,14 +15,16 @@ def value_from_ast_untyped(
     Unlike `value_from_ast()`, no type is provided. The resulting Python value will
     reflect the provided GraphQL value AST.
 
-    | GraphQL Value        | JSON Value | Python Value |
-    | -------------------- | ---------- | ------------ |
-    | Input Object         | Object     | dict         |
-    | List                 | Array      | list         |
-    | Boolean              | Boolean    | bool         |
-    | String / Enum        | String     | str          |
-    | Int / Float          | Number     | int / float  |
-    | Null                 | null       | None         |
+    =================== ============== ================
+       GraphQL Value      JSON Value     Python Value
+    =================== ============== ================
+       Input Object       Object         dict
+       List               Array          list
+       Boolean            Boolean        bool
+       String / Enum      String         str
+       Int / Float        Number         int / float
+       Null               null           None
+    =================== ============== ================
 
     """
     func = _value_from_kind_functions.get(value_node.kind)