Update Breaking Changes doc timeline

docs/breaking_changes.md

@@ -15,8 +15,8 @@ The next Breaking Change is scheduled for February 29, 2020.
 ### Important Dates
 
 * [x] 2019 Sep 21 - `future` is created. It will be rebased weekly.
-* [ ] 2020 Jan 11 - `future` closed to new PR's.
-* [ ] 2020 Jan 11 - Call for testers.
+* [ ] 2020 Feb 1 - `future` closed to new PR's.
+* [ ] 2020 Feb 1 - Call for testers.
 * [ ] 2020 Feb 26 - `master` is locked, no PR's merged.
 * [ ] 2020 Feb 28 - Merge `future` to `master`.
 * [ ] 2020 Feb 29 - `master` is unlocked. PR's can be merged again.
@@ -68,7 +68,7 @@ This happens immediately after the previous `future` branch is merged.
     * [ ] `git push origin future`
     * [ ] `git push --tags`
 
-## 4+ Weeks Before Merge
+## 4 Weeks Before Merge
 
 * `future` is now closed to new PR's, only fixes for current PR's may be merged
 * Post call for testers