Fix typo: certficate -> certificate

Author: changeworld

articles/frontdoor/front-door-wildcard-domain.md

@@ -43,7 +43,7 @@ For accepting HTTPS traffic on your wildcard domain, you must enable HTTPS on th
 
 > [!NOTE]
 > * You can choose to use the same wildcard certificate from Azure Key Vault or from Azure Front Door managed certificates for subdomains. 
-> * If you want to add a subdomain of the wildcard domain that’s already validated in the Azure Front Door Standard or Premium profile, the domain validation is automatically approved. This is applicable to Bring Your Own Certificate. Domain ownership is required for managed certficate for sub-domains.
+> * If you want to add a subdomain of the wildcard domain that’s already validated in the Azure Front Door Standard or Premium profile, the domain validation is automatically approved. This is applicable to Bring Your Own Certificate. Domain ownership is required for managed certificate for sub-domains.
 > * If a wildcard domain is validated and already added to one profile, a single-level subdomain can still be added to another profile as long as it is also validated. 
 
 ## Define a subdomain explicitly