[Docs] Fix sub-heading in start-stop-ilm.asciidoc (#51045)

robin13 · Christoph Büscher · commit e04f0a19f7c5 · 2020-01-15T16:17:59.000+01:00
Removed superfluous `=`.
diff --git a/docs/reference/ilm/start-stop-ilm.asciidoc b/docs/reference/ilm/start-stop-ilm.asciidoc
@@ -79,7 +79,7 @@ The operating modes of ILM:
 |===
 
 [float]
-=== Stopping ILM=
+=== Stopping ILM
 
 The ILM service can be paused such that no further steps will be executed
 using the <<ilm-stop,Stop API>>.
