vault: Add example using 'include just_the_description'

Author: claremacrae

resources/sample_vaults/Tasks-Demo/How To/Reuse instructions across the vault.md

@@ -69,7 +69,7 @@ include hide_buttons
 include hide_buttons
 ```
 
-## Hide everything, including tags
+## Show only the description and any tags
 
 explain: `INPUT[toggle:TQ_explain]`
 
@@ -83,6 +83,20 @@ include just_the_description_and_tags
 include just_the_description_and_tags
 ```
 
+## Just show the description, without tags
+
+explain: `INPUT[toggle:TQ_explain]`
+
+````text
+```tasks
+include just_the_description
+```
+````
+
+```tasks
+include just_the_description
+```
+
 ## Advanced use: return a function, that takes a parameter from the query source
 
 ### Has context 'home' - and group by the Include text - version 1