fix(snippets): bold labels, empty optional fields, only mandatory TAB stops

snippets/org-mode/meeting

@@ -2,11 +2,11 @@
 # name: Meeting notes
 # key: ;meeting
 # --
-| Date      | `(format-time-string "%Y-%m-%d")` |
-| Attendees | ${1:names}                        |
-| Topic     | ${2:topic}                        |
-|-----------+-----------------------------------|
-| Notes     | ${3:discussion notes}             |
-| Actions   | ${4:action items}                 |
-| Next      | ${5:next meeting}                 |
+| *Date*      | `(format-time-string "%Y-%m-%d")` |
+| *Attendees* | ${1:names}                        |
+| *Topic*     | ${2:topic}                        |
+|-------------+-----------------------------------|
+| *Notes*     |                                   |
+| *Actions*   |                                   |
+| *Next*      |                                   |
 $0