wip! install: Rosetta is not required for Nextstrain CLI itself as of…

… x.y.z

Related-to: <nextstrain/cli#357>
Related-to: <nextstrain/cli#358>

src/install.rst

@@ -49,7 +49,7 @@ Install Nextstrain CLI
 
       .. note::
 
-         On newer Macs with an `Apple silicon chip <https://support.apple.com/en-us/HT211814>`_ (e.g. M1), `Rosetta 2 <https://support.apple.com/en-us/HT211861>`__ is required for both Nextstrain CLI itself and our runtimes.
+         On newer Macs with an `Apple silicon chip <https://support.apple.com/en-us/HT211814>`_ (e.g. M1), `Rosetta 2 <https://support.apple.com/en-us/HT211861>`__ is required for our runtimes.
          Most of the time, Rosetta 2 will already be enabled.
          If not, the installer will ask you to first enable Rosetta 2 and then retry the installation.