fix: movie_list poster url

subjects/mobile-dev/movie-list/movies.json

@@ -42,7 +42,7 @@
     "Language": "English",
     "Country": "USA",
     "Awards": "9 wins & 21 nominations.",
-    "Poster": "http://ia.media-imdb.com/images/M/MV5BMTU4NzMyNDk1OV5BMl5BanBnXkFtZTcwOTEwMzU1MQ@@._V1_SX300.jpg",
+    "Poster": "https://m.media-amazon.com/images/M/MV5BYTE1ZTBlYzgtNmMyNS00ZTQ2LWE4NjEtZjUxNDJkNTg2MzlhXkEyXkFqcGdeQXVyNjU0OTQ0OTY@._V1_FMjpg_UY720_.jpg",
     "Metascore": "65",
     "imdbRating": "7.2",
     "imdbVotes": "533,874",