Merge pull request #124 from jocelyn-mendez1/DOCSP-38918

DOCSP-38918 Correct `.deb` to `.rpm` in RHEL server install

Author: sarah-olson-mongodb

source/installation/install-on-an-unattended-server/rhel-centos-server-installation/install-rhel-server.txt

@@ -21,7 +21,7 @@ and is exposes it as a web application.
 Steps
 -----
 
-1. Download the latest ``.deb`` binary from the `release page <https://www.mongodb.com/try/download/relational-migrator>`__.
+1. Download the latest ``.rpm`` binary from the `release page <https://www.mongodb.com/try/download/relational-migrator>`__.
 
 #. Install Relational Migrator.