Add fuzzy like this query doc.

docs/Query/FuzzyLikeThisQuery.md

+# Fuzzy Like This Query
+
+> More info about fuzzy like this field query is in the [official elasticsearch docs][1]
+
+Fuzzy like this query find documents that are "like" provided text by running it against one or more fields.
+
+## Simple example
+
+```JSON
+{
+    "fuzzy_like_this" : {
+        "fields" : ["name.first", "name.last"],
+        "like_text" : "text like this one",
+        "max_query_terms" : 12
+    }
+}
+```
+
+In DSL:
+
+```php
+$fuzzyLikeThisQuery = new FuzzyLikeThisQuery(
+    ['name.first', 'name.last'],
+    'text like this one',
+    [ 'max_query_terms' => 12 ]
+);
+
+$search = new Search();
+$search->addQuery($fuzzyLikeThisQuery);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-flt-query.html