PR review fixes

Author: Chris Cho

source/fundamentals/collations.txt

@@ -84,9 +84,8 @@ format:
 
    "<locale code>@collation=<variant code>"
 
-Specify a valid locale in the ``locale code`` placeholder and optionally a
-variant in the ``variant code`` placeholder. The following example specifies
-the "de" locale code and "phonebook" variant code:
+The following example specifies the "de" locale code and "phonebook" variant
+code:
 
 .. code-block:: none
    :copyable: false

source/includes/fundamentals/code-snippets/CollationCollectionExample.java

@@ -193,12 +193,12 @@ private static void operationCollation(MongoCollection collection) {
 
     public static void main(String[] args) {
 
-        String uri = "mongodb://localhost:27017";
+        String uri = "<MongoDB connection URI>";
 
         try (MongoClient mongoClient = MongoClients.create(uri)) {
 
             MongoDatabase database = mongoClient.getDatabase("fundamentals_example");
-            // MongoCollection<Document> collection = database.getCollection("phonebook");
+//            MongoCollection<Document> collection = database.getCollection("phonebook");
 
         }
     }