Fix copypasta

Author: ycombinator

.github/PULL_REQUEST_TEMPLATE.md

@@ -41,7 +41,7 @@ List here all the items you have verified BEFORE sending this PR. Please DO NOT
 <!--
 Will the changes introduced by this PR cause disruption to users in any way? If so, please describe what changes users
 could make on their end to nullify or minimize this disruption. Consider impacts in related systems, not just directly
-when using Beats.
+when using Elastic Agent.
 -->
 
 ## How to test this PR locally