adding preposition

Author: Maddy-Cloudflare

src/content/docs/cloudflare-one/email-security/email-monitoring/search-email.mdx

@@ -241,7 +241,7 @@ To open links in Browser Isolation:
 2. Select **Open in Browser Isolation**.
 3. The link will open in a separate window where you will be able to browse the content securely.
 
-You may receive a HTTP 400 Bad Request Error when opening a link in Browser Isolation. Follow these steps if encounter this problem:
+You may receive a HTTP 400 Bad Request Error when opening a link in Browser Isolation. Follow these steps if you encounter this problem:
 
 1. In [Zero Trust](https://one.dash.cloudflare.com/), select **Settings**.
 2. Select **Browser Isolation**, then enable **Clientless Web Isolation**.