Fix broken AUTOTITLE links in Copilot quickstart reusables

- Update 6 broken AUTOTITLE links to correct paths
- Fix code completion guide link
- Fix chat IDE and mobile links
- Fix CLI and environment configuration links
- All paths verified to exist in current structure

Addresses issue #38825 with minimal surgical fixes only.

Author: aymanaboghonim

data/reusables/copilot/quickstart-nextsteps1.md

@@ -1,3 +1,3 @@
-* **Find out more about {% data variables.product.prodname_copilot_short %} code completion** - See [AUTOTITLE](/copilot/using-github-copilot/using-github-copilot-code-suggestions-in-your-editor).
-* **Find out more about {% data variables.copilot.copilot_chat %}** - See [AUTOTITLE](/copilot/github-copilot-chat/using-github-copilot-chat-in-your-ide){% ifversion fpt %}.{% endif %}{% ifversion ghec %} and [AUTOTITLE](/copilot/github-copilot-enterprise/copilot-chat-in-github/using-github-copilot-chat-in-githubcom).{% endif %}
-* **Learn how to write effective prompts** - See [AUTOTITLE](/copilot/using-github-copilot/prompt-engineering-for-github-copilot).
+* **Find out more about {% data variables.product.prodname_copilot_short %} code completion** - See [AUTOTITLE](/copilot/using-github-copilot/getting-code-suggestions-in-your-ide-with-github-copilot).
+* **Find out more about {% data variables.copilot.copilot_chat %}** - See [AUTOTITLE](/copilot/using-github-copilot/copilot-chat/asking-github-copilot-questions-in-your-ide){% ifversion fpt %}.{% endif %}{% ifversion ghec %} and [AUTOTITLE](/copilot/github-copilot-enterprise/copilot-chat-in-github/using-github-copilot-chat-in-githubcom).{% endif %}
+* **Learn how to write effective prompts** - See [AUTOTITLE](/copilot/using-github-copilot/copilot-chat/prompt-engineering-for-copilot-chat).

data/reusables/copilot/quickstart-nextsteps2.md

@@ -1,3 +1,3 @@
-* **Use {% data variables.product.prodname_copilot_short %} on your mobile device** - See [AUTOTITLE](/copilot/github-copilot-chat/copilot-chat-in-github-mobile/using-github-copilot-chat-in-github-mobile).
-* **Use {% data variables.product.prodname_copilot_short %} on the command line** - See [AUTOTITLE](/copilot/github-copilot-in-the-cli/using-github-copilot-in-the-cli).
-* **Configure {% data variables.product.prodname_copilot_short %} in your editor** - You can enable or disable {% data variables.product.prodname_copilot %} from within your editor, and create your own preferred keyboard shortcuts for {% data variables.product.prodname_copilot_short %}. See [AUTOTITLE](/copilot/configuring-github-copilot/configuring-github-copilot-in-your-environment).
+* **Use {% data variables.product.prodname_copilot_short %} on your mobile device** - See [AUTOTITLE](/copilot/using-github-copilot/copilot-chat/asking-github-copilot-questions-in-github-mobile).
+* **Use {% data variables.product.prodname_copilot_short %} on the command line** - See [AUTOTITLE](/copilot/managing-copilot/configure-personal-settings/configuring-github-copilot-in-the-cli).
+* **Configure {% data variables.product.prodname_copilot_short %} in your editor** - You can enable or disable {% data variables.product.prodname_copilot %} from within your editor, and create your own preferred keyboard shortcuts for {% data variables.product.prodname_copilot_short %}. See [AUTOTITLE](/copilot/managing-copilot/configure-personal-settings/configuring-github-copilot-in-your-environment).