feat(android): added activity parameter in case of oauth2

Author: christyjacob4

templates/android/docs/kotlin/example.md.twig

@@ -25,6 +25,9 @@ class MainActivity : AppCompatActivity() {
         GlobalScope.launch {
 {% if method.type == 'webAuth' %}            {% elseif method.type == 'location' %}            val result = {% else %}            val response = {% endif %}{{ service.name | caseCamel }}.{{ method.name | caseCamel }}({% if method.parameters.all | length == 0 %}){% endif %}
 
+{% if method.type == "webAuth" %}
+                activity = this@MainActivity,
+{% endif %}
 {% for parameter in method.parameters.all %}
 {% if parameter.required %}
                 {{parameter.name}} = {{ parameter | paramExample }}{% if not loop.last %},{% endif %}