Update schema/bom-1.7.proto

Co-authored-by: Jan Kowalleck <jan.kowalleck@owasp.org>
Signed-off-by: Steve Springett <steve@springett.us>

Author: stevespringett

schema/bom-1.7.proto

@@ -2291,7 +2291,7 @@ message CryptoProperties {
     optional google.protobuf.Timestamp revocationDate = 16;
     // The date and time (timestamp) when the certificate was destroyed.
     optional google.protobuf.Timestamp destructionDate = 17;
-    // A certificate extension is an optional field that provides additional information about the certificate or its use. Extensions are used to convey additional information beyond the standard fields.
+    // A certificate extension is a field that provides additional information about the certificate or its use. Extensions are used to convey additional information beyond the standard fields.
     optional CertificateExtensions certificateExtensions = 18;
     // A list of cryptographic assets related to this component.
     optional RelatedCryptographicAssets relatedCryptographicAssets = 19;