Use forum.gitea.com instead of old URL (#31989) (#31992)

Backport #31989 by @lunny

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

.github/ISSUE_TEMPLATE/bug-report.yaml

@@ -11,7 +11,7 @@ body:
       value: |
         1. Please speak English, this is the language all maintainers can speak and write.
         2. Please ask questions or configuration/deploy problems on our Discord
-           server (https://discord.gg/gitea) or forum (https://discourse.gitea.io).
+           server (https://discord.gg/gitea) or forum (https://forum.gitea.com).
         3. Make sure you are using the latest release and
            take a moment to check that your issue hasn't been reported before.
         4. Make sure it's not mentioned in the FAQ (https://docs.gitea.com/help/faq)

.github/ISSUE_TEMPLATE/config.yml

@@ -7,7 +7,7 @@ contact_links:
     url: https://discord.gg/Gitea
     about: Please ask questions and discuss configuration or deployment problems here.
   - name: Discourse Forum
-    url: https://discourse.gitea.io
+    url: https://forum.gitea.com
     about: Questions and configuration or deployment problems can also be discussed on our forum.
   - name: Frequently Asked Questions
     url: https://docs.gitea.com/help/faq

.github/ISSUE_TEMPLATE/feature-request.yaml

@@ -7,7 +7,7 @@ body:
       value: |
         1. Please speak English, this is the language all maintainers can speak and write.
         2. Please ask questions or configuration/deploy problems on our Discord
-           server (https://discord.gg/gitea) or forum (https://discourse.gitea.io).
+           server (https://discord.gg/gitea) or forum (https://forum.gitea.com).
         3. Please take a moment to check that your feature hasn't already been suggested.
   - type: textarea
     id: description

.github/ISSUE_TEMPLATE/ui.bug-report.yaml

@@ -11,7 +11,7 @@ body:
       value: |
         1. Please speak English, this is the language all maintainers can speak and write.
         2. Please ask questions or configuration/deploy problems on our Discord
-           server (https://discord.gg/gitea) or forum (https://discourse.gitea.io).
+           server (https://discord.gg/gitea) or forum (https://forum.gitea.com).
         3. Please take a moment to check that your issue doesn't already exist.
         4. Make sure it's not mentioned in the FAQ (https://docs.gitea.com/help/faq)
         5. Please give all relevant information below for bug reports, because

modules/activitypub/user_settings_test.go

@@ -10,7 +10,7 @@ import (
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
 
-	_ "code.gitea.io/gitea/models" // https://discourse.gitea.io/t/testfixtures-could-not-clean-table-access-no-such-table-access/4137/4
+	_ "code.gitea.io/gitea/models" // https://forum.gitea.com/t/testfixtures-could-not-clean-table-access-no-such-table-access/4137/4
 
 	"github.com/stretchr/testify/assert"
 )

templates/install.tmpl

@@ -124,7 +124,7 @@
 					</div>
 					<div class="inline required field">
 						<label for="domain">{{ctx.Locale.Tr "install.domain"}}</label>
-						<input id="domain" name="domain" value="{{.domain}}" placeholder="try.gitea.io" required>
+						<input id="domain" name="domain" value="{{.domain}}" placeholder="demo.gitea.com" required>
 						<span class="help">{{ctx.Locale.Tr "install.domain_helper"}}</span>
 					</div>
 					<div class="inline field">
@@ -139,7 +139,7 @@
 					</div>
 					<div class="inline required field">
 						<label for="app_url">{{ctx.Locale.Tr "install.app_url"}}</label>
-						<input id="app_url" name="app_url" value="{{.app_url}}" placeholder="https://try.gitea.io" required>
+						<input id="app_url" name="app_url" value="{{.app_url}}" placeholder="https://demo.gitea.com" required>
 						<span class="help">{{ctx.Locale.Tr "install.app_url_helper"}}</span>
 					</div>
 					<div class="inline required field">