Update docs/en/pid-eaa-issuance.rst

Co-authored-by: fmarino-ipzs <[email protected]>

docs/en/pid-eaa-issuance.rst

@@ -37,7 +37,7 @@ The :numref:`fig_High-Level-Flow-ITWallet-PID-Issuance` shows a general architec
 Below a detailed description for each step represented in the previous picture:
 
     0. **Wallet Instance Setup**: the first time the Wallet Instance is started a preliminary setup phase MUST be carried out. It consists of the release of a verifiable proof issued by the Attestation Service provided by the Wallet Provider that asserts the genuineness, the authenticity and the compliance with a trust framework of the Wallet Instance. The verifiable proof binds a public key corresponding to a local private key generated by the Wallet Instance. 
-    1. **Obtaining the trusted PID Provider**: the Wallet Instance discovers the trusted PID Provider, eg: `https://trust-anchor.eudi.wallet.developers.italia.it/list?entity_type=openid_credential_issuer` and then inspects the metadata looking to the availability of the PID credential. 
+    1. **Obtaining the trusted PID Provider**: the Wallet Instance discovers the trusted PID Provider at the Subordinate Listing Endpoint of the Trust Anchor, and then inspects the metadata looking for the availability of the PID credential. 
     2. **Obtaining of PID Provider metadata**: the Wallet Instance establishes the trust to the PID Provider according to the Trust Model, obtaining the Metadata that discloses the formats of the PID, the algorithms supported, and any other parameter required for interoperability needs.
     3. **PID request**: following the Authorization Code Flow in `[OIDC4VCI. Draft 13] <https://openid.bitbucket.io/connect/openid-4-verifiable-credential-issuance-1_0.html>`_ the Wallet Instance requests a PID to the PID Provider. A fresh key pairs is generated by the Wallet Instance, the public key is used by PID Provider for the key binding of the PID. The PID Provider checks the Wallet Instance by means of the Wallet Attestation and the Trust Chain related to the Wallet Provider.
     4. **End-user authentication**: the PID Provider authenticates the End-User with LoA High, acting as an IAM Proxy to the National eID system.