Update advisory diagnostics

docs/src/checks/advisories/diags.md

@@ -1,33 +1,33 @@
 # Advisories Diagnostics
 
-### `A001` - security vulnerability detected
+### `vulnerability` - security vulnerability detected
 
 A [`vulnerability`](cfg.md#the-vulnerability-field-optional) advisory was detected for a crate.
 
-### `A002` - notice advisory detected
+### `notice` - notice advisory detected
 
 A [`notice`](cfg.md#the-notice-field-optional) advisory was detected for a crate.
 
-### `A003` - unmaintained advisory detected
+### `unmaintained` - unmaintained advisory detected
 
 An [`unmaintained`](cfg.md#the-unmaintained-field-optional) advisory was detected for a crate.
 
-### `A004` - unsound advisory detected
+### `unsound` - unsound advisory detected
 
 An [`unsound`](cfg.md#the-unsound-field-optional) advisory was detected for a crate.
 
-### `A005` - detected yanked crate
+### `yanked` - detected yanked crate
 
 A crate using a version that has been [yanked](cfg.md#the-yanked-field-optional) from the registry index was detected.
 
-### `A006` - unable to check for yanked crates
+### `index_failure` - unable to check for yanked crates
 
 An error occurred trying to read or update the registry index (typically crates.io) so cargo-deny was unable to check the current yanked status for any crate.
 
-### `A007` - advisory was not encountered
+### `advisory_not_detected` - advisory was not detected
 
-An advisory in [`advisories.ignore`](cfg.md#the-ignore-field-optional) didn't apply to any crate.
+An advisory in [`advisories.ignore`](cfg.md#the-ignore-field-optional) didn't apply to any crate. This could happen if the advisory was [withdrawn](https://docs.rs/rustsec/latest/rustsec/advisory/struct.Metadata.html#structfield.withdrawn), or the version of the crate no longer falls within the range of affected versions the advisory applies to.
 
-### `A008` - advisory not found in any advisory database
+### `unknown_advisory` - advisory not found in any advisory database
 
-An advisory in [`advisories.ignore`](cfg.md#the-ignore-field-optional) wasn't found in any of the configured advisory databases.
+An advisory in [`advisories.ignore`](cfg.md#the-ignore-field-optional) wasn't found in any of the configured advisory databases, usually indicating a typo, as advisories, at the moment, are never deleted from the database, at least the canonical [advisory-db](https://github.com/rustsec/advisory-db).