Fix jira regex

The example regex match does not work. Replacing it with one
that does work.

bug: issue 5205
Change-Id: Ic35640d08aab32166693300625536683eb635f4b

src/main/resources/Documentation/config.md

diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index 50a0cad..5365d8e 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -77,7 +77,7 @@
 Example:
 
     [commentLink "its-jira"]
-    match = (\\[[A-Z][A-Z]+-[1-9][0-9]*\\])
+    match = ([A-Z]+-[0-9]+)
     html = "<a href=\"http://jira.example.com/browse/$1\">$1</a>"
     association = SUGGESTED