institution rename

docs/CMIP6Plus/Rules/institution.md

@@ -1,6 +1,6 @@
 # Institutions
 
-???+ abstract "Instructions"
+???- abstract "Instructions"
 
     The rule guides describe what is required to submit a new item, and how to correctly fill out the forms and avoid submission errors. 
 
@@ -13,6 +13,8 @@ This is what we shall use to identify an institution within relevant scripts. Th
 
 ??? warning "Once data has been submitted using this handle, it cannot be changed, even if your institute rebrands."
 
+    <add Link to document here>
+
 *Rules* : <b> Unicode, `[A-z]`, case-sensitive. Max 25 (tbc) characters. </b>
 
 ## Full Name