Fix incorrect import statements in examples

examples/db/db_jsonkey.py

@@ -1,4 +1,4 @@
-from simple import db
+from replit import db
 
 
 def demo():

examples/maqpi/manual_auth.py

@@ -1,15 +1,15 @@
 """A basic example of repl auth."""
-import simple
+from replit import maqpy
 
-app = simple.App("app")
+app = maqpy.App("app")
 
 
 @app.route("/")
 def index():
-    if simple.signed_in:
-        return "Hello " + simple.auth.name
+    if maqpy.signed_in:
+        return "Hello " + maqpy.auth.name
     else:
-        return simple.signin()  # optionally: simple.sigin(title="My title")
+        return maqpy.signin()  # optionally: simple.sigin(title="My title")
 
 
 if __name__ == "__main__":