[skip e2e]Modify grammar in content (#14302)

Signed-off-by: Njingkl <jingjing.jia@zilliz.com>

docs/design_docs/milvus_create_index_en.md

@@ -178,13 +178,13 @@ message CreateIndexRequest {
 }
 ```
 
-13. When receive `CreateIndex` request, `IndexNode` would wrap this request into `IndexBuildTask`, and push this task into `IndexBuildQueue`, then send response to `IndexCoord`.
+13. When receiving `CreateIndex` request, `IndexNode` would wrap this request into `IndexBuildTask`, and push this task into `IndexBuildQueue`, then send response to `IndexCoord`.
 
 14. There is a background service, `indexBuildLoop`, in the `IndexNode`. `indexBuildLoop` would call `scheduleIndexBuildTask` to get a `IndexBuildTask` from `IndexBuildQueue`, and then start another `goroutine` to build index and update meta.
 
 _Note_: `IndexNode` will not notify the `QueryCoord` to load the index files, if a user wants to speed up search by these index files, he should call `ReleaseCollection` firstly, then call `LoadCollection` to load these index files.
 
-15. As mentioned earlier, `RootCoord` would only search on these flushed segments on `CreateIndex` request, the following figure show how to deal with the newly added segments.
+15. As mentioned earlier, `RootCoord` would only search on these flushed segments on `CreateIndex` request, the following figure shows how to deal with the newly added segments.
 
 ![data_coord_flushed](./graphs/milvus_create_index_data_coord_flushed.png)