add IndieAuth to Standards section with TR link

add https://www.w3.org/TR/indieauth/ to Standards / Identifiers section in list along with WebID.

Author: tantek

index.bs

@@ -424,7 +424,7 @@ Note: Not all of the technologies indicated are standard, so they should not be
 This is why several Standards Development Organizations (SDOs) such as the World Wide Web Consortium (W3C), the Internet Engineering Task Force (IETF), the OpenID Foundation (OIDF), and the Decentralized Identity Foundation (DIF) are coordinating to standardize the components and how they should communicate:
 
 * **Data Models:** abstract models for Credentials and Presentation such as the [Verifiable Credentials Data Model](https://www.w3.org/TR/vc-data-model/) and mDL in ISO/IEC [18013-5:2021](https://www.iso.org/standard/69084.html).  
-* **Identifiers**: [DIDs](https://www.w3.org/TR/did-core/) and the [DID methods](https://w3c.github.io/did-spec-registries/#did-methods), or [WebID](https://w3c.github.io/WebID/spec/identity/).  
+* **Identifiers**: [DIDs](https://www.w3.org/TR/did-core/) and the [DID methods](https://w3c.github.io/did-spec-registries/#did-methods), [IndieAuth](https://www.w3.org/TR/indieauth/), or [WebID](https://w3c.github.io/WebID/spec/identity/).  
 * **Encoding Schemas:** JSON, JSON-LD, CBOR, CBOR-LD.  
 * **Securing Mechanisms:** Each mechanism may or may not support different privacy features or be quantum-resistant:  
     * **Enveloped Formats (Credential Formats)**: The proof wraps around the serialization of the credential.