Update about-self-hosted-runners.md (#38948)

Co-authored-by: Sharra-writes <[email protected]>

Author: Curtisjnes

content/actions/hosting-your-own-runners/managing-self-hosted-runners/about-self-hosted-runners.md

@@ -32,7 +32,7 @@ You can use self-hosted runners anywhere in the management hierarchy. Repository
 
 ### Requirements for self-hosted runner machines
 
-You can use any machine as a self-hosted runner as long at it meets these requirements:
+You can use any machine as a self-hosted runner as long as it meets these requirements:
 
 * You can install and run the self-hosted runner application on the machine.
 * The machine can communicate with {% data variables.product.prodname_actions %}.