feat: fix kotlin documentation

Author: christyjacob4

templates/kotlin/docs/example.md.twig

@@ -1,14 +1,26 @@
 import {{ sdk.namespace | caseDot }}.Client
 import {{ sdk.namespace | caseDot }}.services.{{ service.name | caseUcfirst }}
 
-val client = Client(context)
+suspend fun main() {
+    val client = Client(context)
 {% if method.security|length > 0 %}
-  .setEndpoint("https://[HOSTNAME_OR_IP]/v1") // Your API Endpoint
+      .setEndpoint("https://[HOSTNAME_OR_IP]/v1") // Your API Endpoint
 {% for node in method.security %}
 {% for key,header in node|keys %}
-  .set{{header | caseUcfirst}}("{{node[header]['x-appwrite']['demo']}}") // {{node[header].description}}
+      .set{{header | caseUcfirst}}("{{node[header]['x-appwrite']['demo']}}") // {{node[header].description}}
 {% endfor %}{% endfor %}{% endif %}
 
-val {{ service.name | caseCamel }}Service = {{ service.name | caseUcfirst }}(client)
-val response = {{ service.name | caseCamel }}Service.{{ method.name | caseCamel }}({% for parameter in method.parameters.all %}{% if parameter.required %}{% if not loop.first %}, {% endif %}{{ parameter | paramExample }}{% endif %}{% endfor %})
-val json = response.body?.string()
+    val {{ service.name | caseCamel }} = {{ service.name | caseUcfirst }}(client)
+    val response = {{ service.name | caseCamel }}.{{ method.name | caseCamel }}({% if method.parameters.all | length == 0 %}){% endif %}
+
+{% for parameter in method.parameters.all %}
+{% if parameter.required %}
+        {{parameter.name}} = {{ parameter | paramExample }}{% if not loop.last %},{% endif %}
+
+{% endif %}
+{% if loop.last %}
+    )
+{% endif %}
+{% endfor %}
+    val json = response.body?.string()
+}