Update README.md

Author: brittjay0104

artifact_documentation/README.md

@@ -22,7 +22,7 @@ All the above listed artifacts, with the exception of the virtual machine file,
 
 1. Download [VirtualBox](https://www.virtualbox.org).
 2. Download virtual machine file [CausalTesting_Artifact.ova](https://drive.google.com/open?id=1hyzHYCQEkOzYiLGldkBVxNvQt0Phb-th).
-<br> **Please note this is a large file (5BG) and may some time to download.**
+<br> **Please note this is a large file (5BG) and may take some time to download.**
 3. Open VirtualBox.
 4. Go to **File > Import Appliance...**
 5. Find and select the downloaded virtual machine file (CausalTesting_Artifact.ova). Click **"Continue"**.