Update meeting cadence in CONTRIBUTING.md (#152)

Signed-off-by: Scott Rigby <scott@r6by.com>

Author: scottrigby

content/pages/get-involved.mdx

@@ -17,7 +17,7 @@ The Working Group will review all open issues and PRs.
 
 ## Meetings
 
-- 🗓 1st & 3rd Wednesdays at [19:00 GMT](https://greenwichmeantime.com/time-gadgets/time-zone-converter/)
+- 🗓 3rd Wednesdays at [19:00 GMT](https://greenwichmeantime.com/time-gadgets/time-zone-converter/)
 - 👩‍💻 Join using [this Zoom link](https://zoom.us/j/93779536510?pwd=TEFzbGRzREI3MVlkZmluemVkMEhHdz09)
 - ✏️ See [Agenda and Notes](https://docs.google.com/document/d/1hxifmCdOV5_FbKloDJRWZQHq0ge-trXJKF-BgV4wHVk/) for next and and all previous meetings
 - 💡 Hint: use the [document outline](https://support.google.com/docs/answer/6367684) to help navigate to the right meeting!