Update examples (#1096)

* run_server -> run

* Update apps

Author: tcbegley

components_page/components/index/simple.py

@@ -21,4 +21,4 @@
 
 # 5. Start the Dash server
 if __name__ == "__main__":
-    app.run_server()
+    app.run()

content/docs/quickstart.md

@@ -65,7 +65,7 @@ app.layout = dbc.Container(
 )
 
 if __name__ == "__main__":
-    app.run_server()
+    app.run()
 ```
 
 ## Examples

demos/demo_layout.py

@@ -66,4 +66,4 @@ def for_path(self, component):
 if __name__ == "__main__":
     app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP])
     app.layout = _layout
-    app.run_server(port=8888, debug=True)
+    app.run(port=8888, debug=True)

demos/theme_explorer/__init__.py

@@ -134,4 +134,4 @@ def open_toast(_):
 
 
 if __name__ == "__main__":
-    app.run_server(debug=True)
+    app.run(debug=True)

templates/index.html

@@ -68,7 +68,7 @@ <h2>Get started quickly</h2>
 )
 
 if __name__ == "__main__":
-    app.run_server()</code></pre>
+    app.run()</code></pre>
       </div>
     </div>
     <hr />