Move links out of translation (#24446)

Addition to
https://github.com/go-gitea/gitea/pull/24426#discussion_r1181261215

I updated all existing translations too because otherwise they would
show something like

> For more information on the Container registry, see [the
documentation](#).%!(EXTRA
string=https://docs.gitea.io/en-us/packages/container/)

---------

Co-authored-by: Giteabot <teabot@gitea.io>

templates/package/shared/cargo.tmpl

@@ -18,7 +18,7 @@
 			<button class="ui green button">{{$.locale.Tr "packages.owner.settings.cargo.rebuild"}}</button>
 		</form>
 		<div class="field">
-			<label>{{.locale.Tr "packages.cargo.documentation" | Safe}}</label>
+			<label>{{.locale.Tr "packages.cargo.documentation" "https://docs.gitea.io/en-us/usage/packages/cargo/" | Safe}}</label>
 		</div>
 	</div>
 </div>

templates/package/shared/list.tmpl

@@ -44,7 +44,7 @@
 						{{$packagesUrl := URLJoin .Owner.HomeLink "-" "packages"}}
 						<p>{{.locale.Tr "packages.empty.repo" $packagesUrl | Safe}}</p>
 					{{end}}
-					<p>{{.locale.Tr "packages.empty.documentation" | Safe}}</p>
+					<p>{{.locale.Tr "packages.empty.documentation" "https://docs.gitea.io/en-us/usage/packages/overview/" | Safe}}</p>
 				</div>
 			{{else}}
 				<p>{{.locale.Tr "packages.filter.no_result"}}</p>