DOCSP-6066 Add w=majority to all Atlas connection snippets (#517)

Author: cbush

source/drivers/c.txt

@@ -60,7 +60,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
       mongoc_init ();
 
       client = mongoc_client_new(
-         "mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true"
+         "mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true&w=majority"
       );
       database = mongoc_client_get_database (client, "test");
 

source/drivers/csharp.txt

@@ -51,7 +51,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
    using MongoDB.Driver;
    // ...
    var client = new MongoClient(
-       "mongodb+srv://<username>:<password>@<cluster-address>/test"
+       "mongodb+srv://<username>:<password>@<cluster-address>/test?w=majority"
    );
    var database = client.GetDatabase("test");
 

source/drivers/cxx.txt

@@ -52,7 +52,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
    mongocxx::instance inst{}; // This should be done only once.
    mongocxx::client conn{
       mongocxx::uri{
-         "mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true"
+         "mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true&w=majority"
       }
    };
    mongocxx::database db = conn["test"];

source/drivers/go.txt

@@ -55,7 +55,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
 
    ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
    client, err := mongo.Connect(ctx, options.Client().ApplyURI(
-      "mongodb+srv://<username>:<password>@<cluster-address>/test"
+      "mongodb+srv://<username>:<password>@<cluster-address>/test?w=majority"
    ))
    if err != nil { log.Fatal(err) }
 

source/drivers/java.txt

@@ -66,7 +66,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
 
    // ...
    ConnectionString connString = new ConnectionString(
-       "mongodb+srv://<username>:<password>@<cluster-address>/test"
+       "mongodb+srv://<username>:<password>@<cluster-address>/test?w=majority"
    );
    MongoClientSettings settings = MongoClientSettings.builder()
        .applyConnectionString(connString)

source/drivers/node.txt

@@ -69,7 +69,7 @@ To connect to a `MongoDB Atlas <https://docs.atlas.mongodb.com/>`_ cluster, use
 .. code-block:: javascript
 
    const MongoClient = require('mongodb').MongoClient;
-   const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/test?retryWrites=true";
+   const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/test?retryWrites=true&w=majority";
    const client = new MongoClient(uri, { useNewUrlParser: true });
    client.connect(err => {
      const collection = client.db("test").collection("devices");