update release docs prose

[skip ci]

Author: lucascolley

docs/dev/releasing.md

@@ -44,16 +44,14 @@
 
 - [ ] **Update the version.**
 
-  You must edit both of
+  You must edit the version in:
 
   ```
   array_api_compat/__init__.py
   pyproject.toml
   meson.build
   ```
 
-  and update the version.
-
 - [ ] **Update the [changelog](../changelog.md).**
 
   Edit