ICU-22723 Update PR template help text for next version's ticket numbers

.github/pull_request_template.md

@@ -1,12 +1,15 @@
 <!--
 Thank you for your pull request!
 
-Please see http://site.icu-project.org/processes/contribute for general
-information on contributing to ICU.
+* General info on contributing: please see https://github.com/unicode-org/icu/blob/main/CONTRIBUTING.md
+* Ticket numbers for minor changes: for minor changes (ex: docs typos), you can reuse one of the open catch-all tickets for our next release
+  - ICU 76 ticket: docs minor fixes: typos/etc./version updates / User Guide & API docs: ICU-22722
+  - ICU 76 ticket: code warnings/version updates: ICU-22721
+* Contributors license agreement (CLA): 
+  You will be automatically asked to sign the CLA before the PR is accepted.
+  To sign the CLA: https://cla-assistant.io/unicode-org/icu
 
-You will be automatically asked to sign the contributors license agreement (CLA) before the PR is accepted.
-- sign: https://cla-assistant.io/unicode-org/icu
-- license: http://www.unicode.org/copyright.html
+  For terms of use and license, see https://www.unicode.org/terms_of_use.html
 -->
 
 ##### Checklist

CONTRIBUTING.md

@@ -80,10 +80,10 @@ We meet once a week by phone. See the [agenda & meeting minutes][meetings].
 
 ## Setup & Workflow
 
-- [Source Code Access][repository]
 - [git for ICU Developers][git4icu]
-- [Tips for developers][tips]
-- [Eclipse and other setup][setup]
+- [Setup for Contributors][setup]
+  - [Source Code Access][repository]
+  - [Tips for C++ Contributors][tips]
 - [Submitting ICU Bugs and Feature Requests][bugs]
 - [ICU Ticket Life cycle][ticket-lifecycle]
 
@@ -111,7 +111,7 @@ The project is released under [LICENSE](./LICENSE).
 [contacts]: https://icu.unicode.org/contacts
 [copyright]: http://www.unicode.org/copyright.html
 [design]: docs/userguide/icu/design.md
-[git4icu]: https://icu.unicode.org/repository/gitdev
+[git4icu]: https://unicode-org.github.io/icu/userguide/dev/gitdev
 [howtouse]: docs/userguide/icu/howtouseicu.md
 [icu4c-api]: https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/
 [icu4j-api]: https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/
@@ -121,12 +121,12 @@ The project is released under [LICENSE](./LICENSE).
 [osi-Unicode-License-3.0]: https://opensource.org/license/unicode-license-v3/
 [policies]: https://www.unicode.org/policies/licensing_policy.html
 [proposal-template]: https://icu.unicode.org/processes/proposal-template
-[repository]: https://icu.unicode.org/repository
-[setup]: https://icu.unicode.org/setup
+[repository]: https://unicode-org.github.io/icu/devsetup/source/
+[setup]: https://unicode-org.github.io/icu/devsetup/
 [sign-cla]: https://cla-assistant.io/unicode-org/.github
 [signing]: https://www.unicode.org/policies/licensing_policy.html#signing
 [ticket-lifecycle]: https://icu.unicode.org/processes/ticket-lifecycle
-[tips]: https://icu.unicode.org/repository/tips
+[tips]: https://unicode-org.github.io/icu/devsetup/cpp/
 [unicode-announcement]: http://blog.unicode.org/2016/05/icu-joins-unicode-consortium.html
 [unicode-corporate-clas]: https://www.unicode.org/policies/corporate-cla-list/
 [unicode-license]: https://www.unicode.org/license.txt

docs/devsetup/cpp/index.md

@@ -42,8 +42,8 @@ For example:
 
 *   `~/icu/mine/**src**`
     *   source tree including icu (ICU4C) & icu4j folders
-    *   setup: mkdir + git clone your fork (see the [Linux Tips
-        subpage](linux.md)) + cd to here.
+    *   setup: mkdir + git clone your fork (see the [Linux Tips subpage](linux.md)) + cd
+        to here.
     *   Use `git checkout <branch>` to switch between branches.
     *   Use `git checkout -b <newbranchname>` to create a new branch and switch
         to it.