Fix typo error on v2023.2 release schedule

Signed-off-by: Sudarshan C P sudarshan.cp2@in.bosch.com

content/release/v2022.6/release_schedule.md

 +++
-date = "2023-06-01"
+date = "2023-08-31"
 weight = 100
 
 title = "v2022.6 Release schedule"
@@ -14,7 +14,7 @@ The v2022.6 release cycle is scheduled to start in July 2023.
 | Soft code freeze/hard feature freeze: end of feature development for this release, only bugfixes allowed | 2023-08-09        |
 | Release candidate 1 (RC1)/hard code freeze: no new code changes may be made after this date              | 2023-08-16        |
 | RC testing                                                                                               | 2023-08-17..08-30 |
-| v2022.4 release                                                                                          | 2023-08-31        |
+| v2022.6 release                                                                                          | 2023-08-31        |
 
 If the release candidate 1 does not successfully pass all required
 tests, then the issues will be fixed and a new release candidate will be