Added/updated snippets for docs (#2318)

docs/doc_examples/9f286416f1b18940f13cb27ab5c8458e.asciidoc

@@ -0,0 +1,28 @@
+// This file is autogenerated, DO NOT EDIT
+// Use `node scripts/generate-docs-examples.js` to generate the docs examples
+
+[source, js]
+----
+const response = await client.indices.create({
+  index: "my-index-000001",
+  settings: {
+    analysis: {
+      analyzer: {
+        my_analyzer: {
+          tokenizer: "keyword",
+          filter: ["my_pattern_replace_filter"],
+        },
+      },
+      filter: {
+        my_pattern_replace_filter: {
+          type: "pattern_replace",
+          pattern: "[£|€]",
+          replacement: "",
+          all: false,
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----