README: Quick readability improvement.
This fixes a repeated word typo.
@@ -38,7 +38,7 @@ The source code is written in *Python 3*.
python3 ./tools/provision -p <path_to_your_python_version>
```
-5. If that succeeds, it will print end with printing the following command:
+5. If that succeeds, it will end with printing the following command:
```
source /.../python-zulip-api/.../activate
```
