Update HOW_TO_RELEASE.md (#7512)

Author: dcherian

HOW_TO_RELEASE.md

@@ -59,7 +59,7 @@ upstream        https://github.com/pydata/xarray (push)
      .. _whats-new.YYYY.MM.X+1:
 
      vYYYY.MM.X+1 (unreleased)
-     ---------------------
+     -----------------------
 
      New Features
      ~~~~~~~~~~~~
@@ -94,8 +94,8 @@ upstream        https://github.com/pydata/xarray (push)
 
 13. Update the version available on pyodide:
     - Open the PyPI page for [Xarray downloads](https://pypi.org/project/xarray/#files)
-    - Clone the [pyodide repository](https://github.com/pyodide/pyodide).
-    - Edit `packages/xarray/meta.yaml` to update the
+    - Edit [`pyodide/packages/xarray/meta.yaml`](https://github.com/pyodide/pyodide/blob/main/packages/xarray/meta.yaml) to update the
+        - version number
         - link to the wheel (under "Built Distribution" on the PyPI page)
         - SHA256 hash (Click "Show Hashes" next to the link to the wheel)
     - Open a pull request to pyodide