typo in ruby docs

Closes #10331

docs/ruby/client.asciidoc

@@ -70,7 +70,7 @@ client.search index: 'my-index', body: { query: { match: { title: 'test' } } }
 === Features at a Glance
 
 * Pluggable logging and tracing
-* Plugabble connection selection strategies (round-robin, random, custom)
+* Pluggable connection selection strategies (round-robin, random, custom)
 * Pluggable transport implementation, customizable and extendable
 * Pluggable serializer implementation
 * Request retries and dead connections handling