Update description of support (#340)

Author: jemgillam

src/pages/index.mdx

@@ -145,8 +145,8 @@ Migrate.
 
 <MarketingDivide from="light" to="nodes" />
 <MarketingSection bg="nodes">
-<MarketingProduct big name="Professional Support" headline="Guaranteed response to critical issues in under 1 business day" more="/support/">
-Give your team access to the knowledge and experience of PostGraphile's maintainer for any issues you face whilst using Graphile tools. 
+<MarketingProduct big name="Development Support" headline="Priority text support straight from the maintainer" more="/support/">
+Give your company access to the knowledge and experience of the Graphile team through your chat server and GitHub/GitLab organisation. Reference your code verbatim and arrange calls for any trickier topics.
 </MarketingProduct>
 
 </MarketingSection>