SECURITY.md: small clean-up

SECURITY.md

@@ -2,9 +2,12 @@
 
 ## Reporting a Vulnerability
 
-To report security issues, send an email to the addresses listed below (not for support).
-Please send any report to all emails listed here.
-The following GPG keys may be used to communicate sensitive information to developers.
+To report security issues, send an email to the addresses listed below.
+(Not for support. Support requests will be *ignored*.)
+
+Please send any report to *all* emails listed here.
+
+The following GPG keys may be used to communicate sensitive information.
 
 
 | Name        | Email                                  | GPG fingerprint                                   |
@@ -12,9 +15,11 @@ The following GPG keys may be used to communicate sensitive information to devel
 | ThomasV     | thomasv [AT] electrum [DOT] org        | 6694 D8DE 7BE8 EE56 31BE D950 2BD5 824B 7F94 70E6 |
 | SomberNight | somber.night [AT] protonmail [DOT] com | 4AD6 4339 DFA0 5E20 B3F6 AD51 E7B7 48CD AF5E 5ED9 |
 
+
+#### Where to find GPG keys
+
 You can import a key by running the following command with that
 individual’s fingerprint: `gpg --recv-keys "<fingerprint>"`
-Ensure that you put quotes around fingerprints containing spaces.
 
 These public keys can also be found in the Electrum git repository,
 in the top-level `pubkeys` folder.