fix JSON MIME types

docs/source/plugins.rst

@@ -218,7 +218,7 @@ The below template provides a minimal example (let's call the file ``mycooljsonf
            """Inherit from parent class"""
 
            super().__init__({'name': 'cooljson', 'geom': None})
-           self.mimetype = 'text/json; subtype:mycooljson'
+           self.mimetype = 'application/json; subtype:mycooljson'
 
        def write(self, options={}, data=None):
            """custom writer"""

pygeoapi/api.py

@@ -1081,7 +1081,7 @@ class API:
 
                     for qt in p.get_query_types():
                         collection['links'].append({
-                            'type': 'text/json',
+                            'type': 'application/json',
                             'rel': 'data',
                             'title': '{} query for this collection as JSON'.format(qt),  # noqa
                             'href': '{}/{}/{}?f={}'.format(