Fix grammar.

Author: vmagelo

articles/cosmos-db/mongodb/how-to-python-get-started.md

@@ -69,7 +69,7 @@ This article shows you how to communicate with the Azure Cosmos DB’s API for M
 
 To connect with the PyMongo driver to Azure Cosmos DB, create an instance of the  [MongoClient](https://pymongo.readthedocs.io/en/stable/api/pymongo/mongo_client.html#pymongo.mongo_client.MongoClient) object. This class is the starting point to perform all operations against databases. 
 
-The most common constructor for **MongoClient** requires just the `host` parameter, which in this article is set to the `COSMOS_CONNECTION_STRING` environment variable. The are other optional parameters and keyword parameters you can use in the constructor. Many of the optional parameters can also be specified with the `host` parameter. If the same option is passed in with `host` and as a parameter, the parameter takes precedence.
+The most common constructor for **MongoClient** requires just the `host` parameter, which in this article is set to the `COSMOS_CONNECTION_STRING` environment variable. There are other optional parameters and keyword parameters you can use in the constructor. Many of the optional parameters can also be specified with the `host` parameter. If the same option is passed in with `host` and as a parameter, the parameter takes precedence.
 
 Refer to the [Troubleshooting guide](error-codes-solutions.md) for connection issues.