pr-template: remove v7.3 and add v8.0 (#16477)

.github/pull_request_template.md

@@ -19,10 +19,10 @@ By default, **CHOOSE MASTER ONLY** so your changes will be applied to the next T
 For details, see [tips for choosing the affected versions (in Chinese)](https://github.com/pingcap/docs-cn/blob/master/CONTRIBUTING.md#版本选择指南).
 
 - [ ] master (the latest development version)
+- [ ] v8.0 (TiDB 8.0 versions)
 - [ ] v7.6 (TiDB 7.6 versions)
 - [ ] v7.5 (TiDB 7.5 versions)
 - [ ] v7.4 (TiDB 7.4 versions)
-- [ ] v7.3 (TiDB 7.3 versions)
 - [ ] v7.1 (TiDB 7.1 versions)
 - [ ] v6.5 (TiDB 6.5 versions)
 - [ ] v6.1 (TiDB 6.1 versions)

README.md

@@ -18,7 +18,7 @@
 | [`release-7.6`](https://github.com/pingcap/docs-cn/tree/release-7.6) | 7.6 开发里程碑版 (DMR) |
 | [`release-7.5`](https://github.com/pingcap/docs-cn/tree/release-7.5) | 7.5 长期支持版 (LTS) |
 | [`release-7.4`](https://github.com/pingcap/docs-cn/tree/release-7.4) | 7.4 开发里程碑版 (DMR) |
-| [`release-7.3`](https://github.com/pingcap/docs-cn/tree/release-7.3) | 7.3 开发里程碑版 (DMR) |
+| [`release-7.3`](https://github.com/pingcap/docs-cn/tree/release-7.3) | 7.3 开发里程碑版 (DMR) （该版本文档已归档，不再提供任何更新）|
 | [`release-7.2`](https://github.com/pingcap/docs-cn/tree/release-7.2) | 7.2 开发里程碑版 (DMR)（该版本文档已归档，不再提供任何更新） |
 | [`release-7.1`](https://github.com/pingcap/docs-cn/tree/release-7.1) | 7.1 长期支持版 (LTS) |
 | [`release-7.0`](https://github.com/pingcap/docs-cn/tree/release-7.0) | 7.0 开发里程碑版 (DMR)（该版本文档已归档，不再提供任何更新） |