Updated Tips & tricks (markdown)

Tips-&-tricks.md

@@ -1,11 +1,13 @@
 The following `bash` function pretty-print the entire comments DB sorted by insertion date. 
 
-    get_blog_comments () {
+```sh
+get_blog_comments () {
     ssh $host sqlite3 -line /path/to/isso/isso.db \
         "'SELECT t.uri,c.created,c.modified,c.text,c.author,c.email,c.website \
           FROM comments AS c, threads as t WHERE c.tid = t.id;'" \
         | perl -wpe '/(created|modified) = ./&&s/= (.*)/"= ".scalar(localtime($1))/e';
-    }
+}
+```
 
 Example output: