Fix soy template in docs, remove leading dot

When running on Gerrit version 3.11.1, the leading dot in
"{template .link}" produces the error "parse error at '.':
expected identifier". Removing the dot makes the template
work again. This patch updates the template in the its-jira
documentation.

Change-Id: Id598b6bc7b2347cd11d207ba46c99870371df3ca
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index cb34003..4889305 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -294,7 +294,7 @@
 
 ```
 {namespace etc.its.templates}
-{template .link}
+{template link}
   {@param changeUrl: string}
   {@param subject: string}
   {@param status: string}