DEV: fix 8.2-RC1 release notes section title

Author: dwdougherty

content/operate/oss_and_stack/stack-with-enterprise/release-notes/redisce/redisos-8.2-release-notes.md

@@ -12,7 +12,7 @@ min-version-rs: blah
 weight: 20
 ---
 
-## Redis Open Source 8.2.0 (July 2025)
+## Redis Open Source 8.2-RC1 (July 2025)
 
 This is the first Release Candidate of Redis Open Source 8.2.