update all references to beta.get.gov to get.gov in all settings files; update application_org_contact to use _public_site_url rather than hardcoded value

src/docker-compose.yml

@@ -32,7 +32,7 @@ services:
       # Is this a production environment
       - IS_PRODUCTION
       # Public site URL link
-      - GETGOV_PUBLIC_SITE_URL=https://beta.get.gov
+      - GETGOV_PUBLIC_SITE_URL=https://get.gov
       # Set a username for accessing the registry
       - REGISTRY_CL_ID=nothing
       # Set a password for accessing the registry

src/registrar/config/settings.py

@@ -335,7 +335,7 @@ CSP_INCLUDE_NONCE_IN = ["script-src-elem"]
 # Cross-Origin Resource Sharing (CORS) configuration
 # Sets clients that allow access control to manage.get.gov
 # TODO: remove :8080 to see if we can have all localhost access
-CORS_ALLOWED_ORIGINS = ["http://localhost:8080", "https://beta.get.gov"]
+CORS_ALLOWED_ORIGINS = ["http://localhost:8080", "https://beta.get.gov", "https://get.gov"]
 CORS_ALLOWED_ORIGIN_REGEXES = [r"https://[\w-]+\.sites\.pages\.cloud\.gov"]
 
 # Content-Length header is set by django.middleware.common.CommonMiddleware

src/registrar/templates/application_org_contact.html

@@ -2,7 +2,7 @@
 {% load field_helpers %}
 
 {% block form_instructions %}
-  <p>If your domain request is approved, the name of your organization and your city/state will be listed in <a href="https://beta.get.gov/about/data/" target="_blank">.gov’s public data.</a></p>  
+  <p>If your domain request is approved, the name of your organization and your city/state will be listed in <a href="{% public_site_url 'about/data/' %}" target="_blank">.gov’s public data.</a></p>  
 
   <h2>What is the name and mailing address of the organization you represent?</h2>