Update src/connections/destinations/catalog/actions-sendgrid/index.md

Co-authored-by: forstisabella <[email protected]>

Author: joe-ayoub-segment

src/connections/destinations/catalog/actions-sendgrid/index.md

@@ -29,7 +29,7 @@ The [Send Email With Dynamic Template](#send-email-with-dynamic-template) Action
 ### Contacts
 SendGrid sends emails to the email addresses you specify, even if they are not listed as Contacts in SendGrid Marketing Campaigns.
 
-### Sendgrid API Key
+### SendGrid API Key
 Segment and SendGrid recommend that you define the SendGrid API key within a subuser account and the domain is authenticated under that same subuser account. The Send Email With Dynamic Template Action requires that the  SendGrid API Key has the following scopes assigned:   
 - Category Management: full
 - IP Management: full