GODRIVER-3475 Correct CreateCollection docs.

Author: matthewdale

mongo/database.go

@@ -110,7 +110,10 @@ func (db *Database) Name() string {
 	return db.name
 }
 
-// Collection gets a handle for a collection with the given name configured with the given CollectionOptions.
+// Collection returns a handle for a collection with the given name and options.
+//
+// If the collection does not exist on the server, it will be created when a
+// write operation is performed.
 func (db *Database) Collection(name string, opts ...options.Lister[options.CollectionOptions]) *Collection {
 	return newCollection(db, name, opts...)
 }
@@ -582,14 +585,15 @@ func (db *Database) Watch(ctx context.Context, pipeline interface{},
 	return newChangeStream(ctx, csConfig, pipeline, opts...)
 }
 
-// CreateCollection executes a create command to explicitly create a new collection with the specified name on the
-// server. If the collection being created already exists, this method will return a mongo.CommandError. This method
-// requires driver version 1.4.0 or higher.
+// CreateCollection immediately creates a new collection on the server with the
+// specified name and options.
 //
-// The opts parameter can be used to specify options for the operation (see the options.CreateCollectionOptions
-// documentation).
+// MongoDB versions < 7.0 will return an error if the collection already exists.
+// MongoDB versions >= 7.0 will not return an error if an existing collection
+// created with the same name and options already exists.
 //
-// For more information about the command, see https://www.mongodb.com/docs/manual/reference/command/create/.
+// For more information about the command, see
+// https://www.mongodb.com/docs/manual/reference/command/create/.
 func (db *Database) CreateCollection(ctx context.Context, name string, opts ...options.Lister[options.CreateCollectionOptions]) error {
 	args, err := mongoutil.NewOptions(opts...)
 	if err != nil {