[DMAAP-BC] Update RTD setup files

Signed-off-by: efiacor <fiachra.corcoran@est.tech>
Change-Id: I0e03f3ed682e319c496b303462732c71436ae6d5
Issue-ID: DMAAP-1824
(cherry picked from commit 86532163d19990e3acfa645a367ed0e0a1c787e0)
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index c689bdb..fff6cf7 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -275,7 +275,7 @@
 
 New features
 ------------
-* Updated log4j (Listed in "Known Vulternabilities" below) - DMAAP-1515
+* Updated log4j (Listed in "Known Vulnerabilities" below) - DMAAP-1515
 * Update Project Lead details - DMAAP-1538
 
 Known Limitations, Issues and Workarounds