Fixed maintainer and version fields

* Fixed format of maintainer email address.
* Fixed template version number by putting quotation marks around it to
make it a string.

templates/huginn/0/rancher-compose.yml

@@ -1,7 +1,7 @@
 version: '2'
 catalog:
     name: Huginn
-    version: 0.1
+    version: "0.1"
     description: Web automation framework. Your agents are standing by!
     questions:
       - variable: DB_PASSWORD

templates/huginn/config.yml

@@ -1,8 +1,8 @@
 name: Huginn
 description: |
   Web automation framework. Your agents are standing by!
-version: 0.1
+version: "0.1"
 category: Automation
 license: MIT
-maintainer: Zicklag (zicklag@katharostech.com)
+maintainer: Zicklag <zicklag@katharostech.com>
 projectURL: https://github.com/huginn/huginn/