Update Browzine link text

Why these changes are being introduced:

USE is currently using language for 2 Browzine
links as they exist in Primo VE now. These will
change with Primo NDE, so USE can be updated now.

Relevant ticket(s):

- [USE-590](https://mitlibraries.atlassian.net/browse/USE-590)

How this addresses that need:

This updates all Browzine links to read, "Browze journal."

Side effects of this change:

None.

Author: jazairi

app/models/browzine.rb

@@ -40,7 +40,7 @@ def self.browzine_link(json_response)
 
     {
       link: json_response['data'][0]['browzineWebLink'],
-      text: 'View journal contents'
+      text: 'Browse journal'
     }
   end
 

app/models/libkey.rb

@@ -76,7 +76,7 @@ def self.browzine_link(external_data)
 
     {
       link: external_data['data']['browzineWebLink'],
-      text: 'Browse journal issue'
+      text: 'Browse journal'
     }
   end