Update replication factor impact to read path (#9061)

**What this PR does / why we need it**:
Update a note to callout that replication factor also impacts read path
behavior.

**Which issue(s) this PR fixes**:
Fixes #<issue number>
N/A

**Special notes for your reviewer**:

**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)

---------

Co-authored-by: J Stickler <julie.stickler@grafana.com>

docs/sources/fundamentals/architecture/components/_index.md

@@ -233,3 +233,5 @@ factor, it is possible that the querier may receive duplicate data. To resolve
 this, the querier internally **deduplicates** data that has the same nanosecond
 timestamp, label set, and log message.
 
+At read path, [replication factor]({{< relref "#replication-factor" >}}) also plays a role here. For example with `replication-factor` of `3`, we require that two queries to be running. 
+