[docs] Tweak presentation and clarity slightly

SECURITY.md

@@ -53,7 +53,7 @@ We are committed to fixing high-risk security issues and releasing them as quick
 
 Additionally, the `candidate` channel of the Multipass snap provides frequent rebuilds of the `stable` channel with updated dependencies.
 These builds are produced from the same Multipass code, but with up-to-date `.deb` packages.
-Candidate snaps are promoted to the stable channel from time to time.
+`candidate` snaps are promoted to the `stable` channel from time to time.
 
 ### How to check your version
 
@@ -63,7 +63,7 @@ You can find out which version of Multipass is installed on your system with the
 multipass version
 ```
 
-The `snap` command provides information on exact revisions and build dates:
+The `snap` command provides information on exact snap revisions and build dates:
 
 ```
 snap info multipass