testnet: rm AN4, add AN1

docs/networks/node-ops/access-onchain-data/light-nodes/observer-node.md

@@ -251,13 +251,14 @@ Access-008:
 
 #### For testnet
 
+Access-001:
+* Host: `access-001.[current devnet spork].nodes.onflow.org`
+* Public Key: `ba69f7d2e82b9edf25b103c195cd371cf0cc047ef8884a9bbe331e62982d46daeebf836f7445a2ac16741013b192959d8ad26998aff12f2adc67a99e1eb2988d`
+
 Access-003:
 * Host: `access-003.[current devnet spork].nodes.onflow.org`
 * Public Key: `b662102f4184fc1caeb2933cf87bba75cdd37758926584c0ce8a90549bb12ee0f9115111bbbb6acc2b889461208533369a91e8321eaf6bcb871a788ddd6bfbf7`
 
-Access-004:
-* Host: `access-004.[current devnet spork].nodes.onflow.org`
-* Public Key: `0d1523612be854638b985fc658740fa55f009f3cd49b739961ab082dc91b178ed781ef5f66878613b4d34672039150abfd9c8cfdfe48c565bca053fa4db30bec`
 
 While the public keys remain the same, the hostnames change each spork to include the spork name. Substitute `[current mainnet spork]` and `[current devnet spork]` with the appropriate spork name (e.g. `mainnet20`).
 See [Past Sporks](../../node-operation/past-sporks.md) for the current spork for each network.