Fix typo

Author: AArnott

docfx/docs/shallow-cloning-agents.md

@@ -21,7 +21,7 @@ To configure the Copilot Coding Agent to set this environment variable, follow t
 1. Select Environments from the list on the left.
 1. Select the `copilot` environment. You may have to create this environment yourself if you have not yet assigned the Copilot Coding Agent an issue to work on in your repo.
 1. Find the "Environment variables" section.
-1. Add an environment variable. Give it the name `NBGV_GitEngine` and the value `Disabled`. Note these are _case senstive_.
+1. Add an environment variable. Give it the name `NBGV_GitEngine` and the value `Disabled`. Note these are _case sensitive_.
 
 See also [GitHub Copilot Coding Agent docs](https://docs.github.com/en/copilot/how-tos/use-copilot-agents/coding-agent/customize-the-agent-environment#setting-environment-variables-in-copilots-environment) for setting environment variables.