add short guide

Author: guimachiavelli

docs.json

@@ -277,6 +277,7 @@
               {
                 "group": "Indexing",
                 "pages": [
+                  "learn/indexing/rename_an_index",
                   "learn/indexing/indexing_best_practices",
                   "learn/indexing/ram_multithreading_performance",
                   "learn/indexing/tokenization"

learn/indexing/rename_an_index.md

@@ -0,0 +1,30 @@
+---
+title: Rename an index
+description: Use the PATCH endpoint of the /indexes route to rename an index
+---
+
+This guide shows you how to change the name of an index.
+
+## Requirements
+
+- A Meilisearch project with at least one index
+- A command-line terminal
+
+## Choose the target index and its new name
+
+Decide which index you want to rename and keep note of its `uid`. This guide changes the name of an index called  `INDEX_A`.
+
+Also choose the new name you wish to assign the index. This guide uses `INDEX_B` for the new name of the index.
+
+## Query the `/indexes/{index_uid}` route
+
+Send a `PATCH` request targeting the index you want to rename:
+
+```sh
+curl \
+  -X PATCH 'MEILISEARCH_URL/indexes/INDEX_A' \
+  -H 'Content-Type: application/json' \
+  --data-binary '{ "uid": "INDEX_B" }'
+```
+
+Replace `INDEX_A` with the current name of your index, and `INDEX_B` with its new name.