Fixed project name on repo template mail

templates/mail/issue/comment.tmpl

@@ -10,7 +10,7 @@
 	<p>
 		---
 		<br>
-		<a href="{{.Link}}">View it on Gogs</a>.
+		<a href="{{.Link}}">View it on Gitea</a>.
 	</p>
 </body>
 </html>

templates/mail/issue/mention.tmpl

@@ -11,7 +11,7 @@
 	<p>
 		---
 		<br>
-		<a href="{{.Link}}">View it on Gogs</a>.
+		<a href="{{.Link}}">View it on Gitea</a>.
 	</p>
 </body>
 </html>

templates/mail/notify/collaborator.tmpl

@@ -10,7 +10,7 @@
 	<p>
 		---
 		<br>
-		<a href="{{.Link}}">View it on Gogs</a>.
+		<a href="{{.Link}}">View it on Gitea</a>.
 	</p>
 </body>
 </html>