Merge pull request #204 from mapbox/dylan/small-incup-doc-fix

Small doc fix

Author: dylannguyen11195

README.md

@@ -81,7 +81,7 @@ export MAPBOX_ACCESS_TOKEN=my.token
 - Tilesets
   - [`create`](#create)
   - [`publish`](#publish)
-  - [`publish-changeset`](#publish-changesets)
+  - [`publish-changesets`](#publish-changesets)
   - [`update`](#update)
   - [`delete`](#delete)
   - [`status`](#status)
@@ -503,7 +503,7 @@ Flags:
 
 ### publish-changesets
 
-Publishes changesets for an incrementally updatable tileset. This command only supports tilesets created with the [Mapbox Tiling Service](https://docs.mapbox.com/mapbox-tiling-service/overview/).
+Publishes changesets for a tileset that supports incremental updates. This command only supports tilesets created with the [Mapbox Tiling Service](https://docs.mapbox.com/mapbox-tiling-service/overview/).
 
 ```shell
 tilesets publish-changesets <tileset_id> --changeset /path/to/changeset.json