fix env typo

Signed-off-by: Maia Iyer <maia.raj.iyer@gmail.com>

Author: maia-iyer

a2a/slack_researcher/a2a_agent.py

@@ -221,6 +221,7 @@ def run():
     # if one of the auth variables is set, create middleware
     # if none of them are set, ignore all authorization headers. No token validation will be performed
     if not settings.JWKS_URL is None:
+        logging.info("JWKS_URI is set - using JWT Validation middleware")
         app.add_middleware(AuthenticationMiddleware, backend=BearerAuthBackend(), on_error=on_auth_error)
 
     uvicorn.run(app, host="0.0.0.0", port=settings.SERVICE_PORT)

a2a/slack_researcher/slack_researcher/config.py

@@ -41,8 +41,8 @@ class Settings(BaseSettings):
         os.getenv("ISSUER", None), 
         description="The issuer for incoming JWT tokens"
     )
-    JWKS_URL: Optional[str] = Field(
-        os.getenv("JWKS_URL", None),
+    JWKS_URI: Optional[str] = Field(
+        os.getenv("JWKS_URI", None),
         description="Endpoint to obtain JWKS from auth server"
     )
     AUDIENCE: Optional[str] = Field(