Reword error message for NoDatabaseError

It looks like Rails already knows there's no database, if so,
I find it a bit too wordy to ask questions. We could
just go ahead and make suggestions as to what could be
wrong.

Author: siaw23

activerecord/lib/active_record/errors.rb

@@ -339,15 +339,15 @@ def initialize(message = nil, connection_pool: nil)
     class << self
       def db_error(db_name)
         NoDatabaseError.new(<<~MSG)
-          We could not find your database: #{db_name}. Available database configurations can be found in config/database.yml.
+          Database not found: #{db_name}. Available database configurations can be found in config/database.yml.
 
           To resolve this error:
 
-          - Did you not create the database, or did you delete it? To create the database, run:
+          - Create the database by running:
 
               bin/rails db:create
 
-          - Has the database name changed? Verify that config/database.yml contains the correct database name.
+          - Verify that config/database.yml contains the correct database name.
         MSG
       end
     end