further sdk module/docs/example updates

Signed-off-by: Vaughn Dice <vdice@akamai.com>

Author: vdice

docs/v4/http/index.html

@@ -3,13 +3,13 @@
 
 class WasiHttpHandler030Rc20260315(http.Handler):
     async def handle_request(self, request: Request) -> Response:
-        with key_value.open_default() as a:
-            a.set("test", bytes("hello world!", "utf-8"))
-            print(a.get_keys())
-            print(a.exists("test"))
-            print(a.get("test"))
-            a.delete("test")
-            print(a.get_keys())
+        with await key_value.open_default() as a:
+            await a.set("test", bytes("hello world!", "utf-8"))
+            print(await a.get_keys())
+            print(await a.exists("test"))
+            print(await a.get("test"))
+            await a.delete("test")
+            print(await a.get_keys())
 
         return Response(
             200,

docs/v4/key_value.html

@@ -1,8 +1,8 @@
 from spin_sdk import http, llm
 from spin_sdk.http import Request, Response
 
-class WasiHttpHandler030Rc20260315(http.Handler):
-    async def handle_request(self, request: Request) -> Response:
+class WasiHttpIncomingHandler020(http.IncomingHandler):
+    def handle_request(self, request: Request) -> Response:
         res = llm.infer("llama2-chat", "tell me a joke")
         print(res.text)
         print(res.usage)

docs/v4/mqtt.html

@@ -15,4 +15,4 @@ source = "app.wasm"
 allowed_outbound_hosts = []
 ai_models = ["llama2-chat"]
 [component.test.build]
-command = "componentize-py -w spin:up/http-trigger@4.0.0 componentize app -o app.wasm"
+command = "componentize-py -w fermyon:spin/http-trigger@3.0.0 componentize app -o app.wasm"