Update con_slsa-conformity.adoc

This is a compromise, that Burr approved in a Slack thread, between Andrew's suggestion to delete one row from the table and my suggestion to keep the row but change the wording.

Author: Chr1st1anSears

docs/modules/ROOT/pages/concepts/slsa/con_slsa-conformity.adoc

@@ -115,8 +115,8 @@ a|{ProductName}:
 
 3+^|_For build isolation_
 
-|L1: Provenance exists
-|None
+|L1
+|No build isolation requirements for L1 conformity
 |N/A
 
 |L2: Hosted build platform
@@ -145,4 +145,4 @@ a|In {ProductName}:
 == Additional resources
 
 * Learn xref:../how-to-guides/Secure-your-supply-chain/proc_inspect-slsa-provenance.adoc[how to inspect the SLSA] provenance for your components. 
-* Visit the link:https://slsa.dev/spec/v1.0/[SLSA overview page], the link:https://slsa.dev/spec/v1.0/levels[Build Levels] page, or the link:https://slsa.dev/spec/v1.0/verifying-systems[verifying build platforms] page. 
+* Visit the link:https://slsa.dev/spec/v1.0/[SLSA overview page], the link:https://slsa.dev/spec/v1.0/levels[Build Levels] page, or the link:https://slsa.dev/spec/v1.0/verifying-systems[verifying build platforms] page.