Update .code-samples.meilisearch.yaml (#484)

Author: curquiza

.code-samples.meilisearch.yaml

@@ -1,3 +1,8 @@
+# This code-samples file is used by the MeiliSearch documentation
+# Every example written here will be automatically fetched by
+# the documentation on build
+# You can read more on https://github.com/meilisearch/documentation/tree/master/.vuepress/code-samples
+---
 get_one_index_1: |-
   client.getIndex('movies').show()
 list_all_indexes_1: |-