Fix tag IMPORTANT

docs/misc/notifications/configuration.adoc

@@ -70,7 +70,7 @@ This is especially important for Microsoft Exchange, where the default limit see
 Also please note that SSL-related settings for mail messaging are currently experimental (e.g. there is no support for setting certificate validation-related properties; default behavior of `javax.mail` implementation is used).
 You may also need to store the mail server self-signed SSL certificate in your Java "cacerts" keystore.
 
-[Important]
+[IMPORTANT]
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 All root and intermediate CA certificates in chain for mailserver certificate must be imported into keystore, please see related documentation link:../../security/crypto/ssl-connections-client-side-.adoc[TLS Connections] how to get certificates and import them into keystore.
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