QF210506-1 -- Tweak to text per PM mtg 5May21 (#503)

https://issues.couchbase.com/browse/DOC-8390

Author: ibsoln

modules/ROOT/pages/_partials/_page-index.adoc

@@ -41,6 +41,10 @@ endif::xref--pfx-sgw[]
 :server-eventing-constructs--xref: {svr--xref}{server-eventing-constructs--page}[Couchbase Eventing Language Constructs]
 :server-eventing-constructs-crc64--xref: {svr--xref}{server-eventing-constructs--page}#crc64_call[Eventing -- crc64()]
 
+:server-eventing-terminologies--page: eventing:eventing-Terminologies.adoc
+:server-eventing-terminologies--xref: {svr--xref}{server-eventing-terminologies--page}[Eventing Terminology]
+:server-eventing-terminologies--xref-bindings: {svr--xref}{server-eventing-terminologies--page}#section_mzd_l1p_m2b[Bucket Bindings]
+
 :server-collections--page: learn:data/scopes-and-collections.adoc
 :server-collections--xref: {svr--xref-7x0}{server-collections--page}[Couchbase Collections]
 :server-collections-default--xref: {svr--xref-7x0}{server-collections--page}#default-scope-and-collection[Default Collections]

modules/ROOT/pages/server-compatibility-eventing.adoc

@@ -35,9 +35,9 @@ Here we provide details on how {server-eventing--xref} relates to data changes i
 
 == Using Eventing
 
-You can use Eventing and Sync Gateway connected to the same bucket, when Eventing operates in *read only* mode.
+You can use Eventing and Sync Gateway connected to the same bucket, when Eventing operates on server buckets in *read only* mode -- see {server-eventing-terminologies--xref-bindings} for how to do this.
 
-To do this, you must write your Eventing function to be *idempotent*; to behave correctly when the same mutation is seen more than once.
+You should write your Eventing function to be *idempotent*; to behave correctly when the same mutation is seen more than once.
 This is necessary because:
 
 * When a single document update is made directly by Sync Gateway, such as those replicated from Couchbase Lite, it generates a single server mutation that writes both the document body and the metadata.