Update install.sh

install.sh

@@ -177,11 +177,11 @@ echo "
       /home/sympl/mysql_password, but you should not use this anywhere else,
       and instead create individual users as needed.
 
- 3. Documentation is at https://wiki.sympl.host.
-    Help can be found at https://forum.sympl.host.
-    If you encounter a bug, you can log it at https://bugs.sympl.host.
+ 3. Documentation is at https://wiki.sympl.io.
+    Help can be found at https://forum.sympl.io.
+    If you encounter a bug, you can log it at https://bugs.sympl.io.
 
- 4. To get started, check http://wiki.sympl.host/Get_Started
+ 4. To get started, check http://wiki.sympl.io/Get_Started
 
 (Press 'q' to quit less.)" >> /home/sympl/README_SYMPL.txt
 
@@ -192,6 +192,6 @@ echo "Important new-user information is available at any time by running:
     You should read this as soon as possible.
 
 Check these URLs for other information:
-    http://wiki.sympl.host for documentation and guides.
-    http://forum.sympl.host for support and assistance.
+    http://wiki.sympl.io for documentation and guides.
+    http://forum.sympl.io for support and assistance.
     "