doc: pronouns for @Fishrock123

might as well while I'm at it

feels a bit weird being the first person on this list with '/they' but I guess someone's gota do it

README.md

@@ -199,7 +199,7 @@ For information about the governance of the Node.js project, see
 * [evanlucas](https://github.com/evanlucas) -
 **Evan Lucas** <evanlucas@me.com> (he/him)
 * [Fishrock123](https://github.com/Fishrock123) -
-**Jeremiah Senkpiel** <fishrock123@rocketmail.com>
+**Jeremiah Senkpiel** <fishrock123@rocketmail.com> (he/they)
 * [gibfahn](https://github.com/gibfahn) -
 **Gibson Fahnestock** <gibfahn@gmail.com> (he/him)
 * [indutny](https://github.com/indutny) -
@@ -294,7 +294,7 @@ For information about the governance of the Node.js project, see
 * [fhinkel](https://github.com/fhinkel) -
 **Franziska Hinkelmann** <franziska.hinkelmann@gmail.com> (she/her)
 * [Fishrock123](https://github.com/Fishrock123) -
-**Jeremiah Senkpiel** <fishrock123@rocketmail.com>
+**Jeremiah Senkpiel** <fishrock123@rocketmail.com>  (he/they)
 * [gabrielschulhof](https://github.com/gabrielschulhof) -
 **Gabriel Schulhof** <gabriel.schulhof@intel.com>
 * [gdams](https://github.com/gdams) -