Change Hashtag to #AMxDC23

[benju69]

Change the hashtag We can put this in RemoteConfig maybe, so we can change this easily each year if needed

[enthuan]

I changed it in the code for the moment.

[enthuan]

Note that the behavior is different on iOS :

• On Android, clicking on the twitter hashtag brings to the AndroidMakers twitter page
• On iOS, it leads on the search page filled with the "#AMxDC23" query.