ReleaseNotes: fix indent

llvm-svn: 297204
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 99304a6..573fcb8 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -57,8 +57,8 @@
   with LLVM option ``-adce-remove-loops`` when the loop body otherwise has
   no live operations.
 
- * The llvm-cov tool can now export coverage data as json. Its html output mode
-   has also improved.
+* The llvm-cov tool can now export coverage data as json. Its html output mode
+  has also improved.
 
 Improvements to ThinLTO (-flto=thin)
 ------------------------------------