fix typo

Author: sebbader-sap

documentation/IDTA-01002-3/modules/ROOT/pages/signatures.adoc

@@ -16,7 +16,7 @@ An example is a device manufacturer supplying to an integrator supplying to a pl
 
 The AASX package format includes the possibility of signing an AASX package, but this is rarely used. AASX packages can also not be protected by AAS security and access rules. This is why signatures are needed as part of the API.
 
-Different levels of API signatures have been investigated by the IDTA TF Security, including JWS (JSON Web Signature) or JAdES (JSON advanced digital signature). This version explains and defines new endpoints /$signed for AAS, Submodel and ConecptDescription, which provide a plain text JWS.
+Different levels of API signatures have been investigated by the IDTA TF Security, including JWS (JSON Web Signature) or JAdES (JSON advanced digital signature). This version explains and defines new endpoints /$signed for AAS, Submodel and ConceptDescription, which provide a plain text JWS.
 
 JWS ist defined in RFC 7515 (https://datatracker.ietf.org/doc/html/rfc7515).