Update sql/README.md

Co-authored-by: Lindsay Holmwood <lindsay@cipherstash.com>

Author: tobyhede

sql/README.md

@@ -2,10 +2,10 @@
 
 
 - Never drop the configuration table as it may contain customer data and needs to live across EQL versions
-- Everything else should have a DROP IF EXISTS
-- Functions should be DROP and CREATE, instead of CREATE OR REPLACE
+- Everything else should have a `DROP IF EXISTS`
+- Functions should be `DROP` and `CREATE`, instead of `CREATE OR REPLACE`
  - Data types cannot be changed once created, so dropping first is more flexible
-- Keep DROP and CREATE together in the code
+- Keep `DROP` and `CREATE` together in the code
 - Types need to be dropped last, add to the `666-drop_types.sql`