doc: use \ for escaping in markdown

ankon · ankon · commit baf13e8c7348 · 2018-08-07T11:46:45.000+02:00
The HTML entities didn't "work", and the documentation contained them literally on the main site.
diff --git a/doc/api/inspector.md b/doc/api/inspector.md
@@ -82,7 +82,7 @@ session.on('inspectorNotification', (message) => console.log(message.method));
 
 It is also possible to subscribe only to notifications with specific method:
 
-### Event: &lt;inspector-protocol-method&gt;
+### Event: \<inspector-protocol-method\>
 <!-- YAML
 added: v8.0.0
 -->
