update doc to mention 1mo=31d and 1y=366d

Signed-off-by: iTrooz <hey@itrooz.fr>

config/crd/v1/bases/velero.io_backups.yaml

@@ -498,7 +498,7 @@ spec:
                   TTL is a time.Duration-compatible string describing how long
                   the Backup should be retained for.
                   Supports time.Duration units + day (d), week (w), month (mo), and year (y).
-                  Note that days, months, and years are static durations: 1d = 24h, 1mo = 30d, 1y = 365d.
+                  Note that days, months, and years are static durations: 1d = 24h, 1mo = 31d, 1y = 366d.
                 type: string
               uploaderConfig:
                 description: UploaderConfig specifies the configuration for the uploader.

config/crd/v1/bases/velero.io_schedules.yaml

@@ -539,7 +539,7 @@ spec:
                       TTL is a time.Duration-compatible string describing how long
                       the Backup should be retained for.
                       Supports time.Duration units + day (d), week (w), month (mo), and year (y).
-                      Note that days, months, and years are static durations: 1d = 24h, 1mo = 30d, 1y = 365d.
+                      Note that days, months, and years are static durations: 1d = 24h, 1mo = 31d, 1y = 366d.
                     type: string
                   uploaderConfig:
                     description: UploaderConfig specifies the configuration for the

pkg/apis/velero/v1/backup_types.go

@@ -111,7 +111,7 @@ type BackupSpec struct {
 	// TTL is a time.Duration-compatible string describing how long
 	// the Backup should be retained for.
 	// Supports time.Duration units + day (d), week (w), month (mo), and year (y).
-	// Note that days, months, and years are static durations: 1d = 24h, 1mo = 30d, 1y = 365d.
+	// Note that days, months, and years are static durations: 1d = 24h, 1mo = 31d, 1y = 366d.
 	// +optional
 	TTL metav1.Duration `json:"ttl,omitempty"`