Update minor release schedule to reflect revised plans (#1467)

Author: philhawksworth

runtime/fundamentals/stability_and_releases.md

@@ -10,12 +10,12 @@ strive to make code working under 1.0.0 continue to work in future versions.
 
 ## Release schedule, channels and long term support
 
-Deno releases a new stable, minor version (eg. v2.1.0, v2.0.0) on a monthly
+Deno releases a new stable, minor version (eg. v2.1.0, v2.0.0) on a 12 week
 schedule.
 
 Patch releases including bug fixes for the latest minor version are released as
-needed - you can expect two or three patch releases before a new minor version
-is released.
+needed - you can expect several patch releases before a new minor version is
+released.
 
 ### Release channels