Documentation and Localization Improvments (#901)

* Update recommended PostGIS image for ARM machines (#900)

PostGIS images from tobi312 are no longer available.
Updated the documentation to use imresamu images as an alternative.
Kept the same PostGIS release version to avoid any unexpected issues for now.

* Small fix to italian text in dashboard (#896)

Co-authored-by: Sean Morley <98704938+seanmorley15@users.noreply.github.com>

---------

Co-authored-by: agarthand <agar@wildgimps.de>
Co-authored-by: thefeltro <142627956+thefeltro@users.noreply.github.com>

frontend/src/locales/it.json

@@ -913,8 +913,8 @@
     "total_visited_cities": "Totale città visitate",
     "document_some_adventures": "Inizia a documentare i tuoi viaggi e costruisci la tua mappa di avventura personale!",
     "view_all": "Visualizza tutto",
-    "welcome_text_1": "Sei stato acceso",
-    "welcome_text_2": "Avventure finora",
+    "welcome_text_1": "Sei stato in",
+    "welcome_text_2": "avventure finora",
     "welcome_text_3": "Continua a esplorare e documentare i tuoi viaggi!"
   },
   "immich": {