Rename master key -> root key in docs (#14542)

website/content/docs/commands/operator/init.mdx

@@ -15,10 +15,10 @@ process by which Vault's storage backend is prepared to receive data. Since
 Vault servers share the same storage backend in HA mode, you only need to
 initialize one Vault to initialize the storage backend.
 
-During initialization, Vault generates an in-memory master key and applies
-Shamir's secret sharing algorithm to disassemble that master key into a
+During initialization, Vault generates an in-memory root key and applies
+Shamir's secret sharing algorithm to disassemble that root key into a
 configuration number of key shares such that a configurable subset of those key
-shares must come together to regenerate the master key. These keys are often
+shares must come together to regenerate the root key. These keys are often
 called "unseal keys" in Vault's documentation.
 
 This command cannot be run against already-initialized Vault cluster.
@@ -75,7 +75,7 @@ flags](/docs/commands) included on all commands.
   `-n`.
 
 - `-key-threshold` `(int: 3)` - Number of key shares required to reconstruct the
-  master key. This must be less than or equal to -key-shares. This is aliased as
+  root key. This must be less than or equal to -key-shares. This is aliased as
   `-t`.
 
 - `-pgp-keys` `(string: "...")` - Comma-separated list of paths to files on disk

website/content/docs/commands/operator/rekey.mdx

@@ -4,7 +4,7 @@ page_title: operator rekey - Command
 description: |-
   The "operator rekey" command generates a new set of unseal keys. This can
   optionally change the total number of key shares or the required threshold of
-  those key shares to reconstruct the master key. This operation is zero
+  those key shares to reconstruct the root key. This operation is zero
   downtime, but it requires the Vault is unsealed and a quorum of existing
   unseal keys are provided.
 ---
@@ -13,7 +13,7 @@ description: |-
 
 The `operator rekey` command generates a new set of unseal keys. This can
 optionally change the total number of key shares or the required threshold of
-those key shares to reconstruct the master key. This operation is zero downtime,
+those key shares to reconstruct the root key. This operation is zero downtime,
 but it requires the Vault is unsealed and a quorum of existing unseal keys are
 provided.
 
@@ -128,7 +128,7 @@ flags](/docs/commands) included on all commands.
   `-n`
 
 - `-key-threshold` `(int: 3)` - Number of key shares required to reconstruct the
-  master key. This must be less than or equal to -key-shares. This is aliased as
+  root key. This must be less than or equal to -key-shares. This is aliased as
   `-t`.
 
 - `-nonce` `(string: "")` - Nonce value provided at initialization. The same

website/content/docs/commands/operator/seal.mdx

@@ -7,7 +7,7 @@ description: >-
 
   stop responding to any operations until it is unsealed. When sealed, the Vault
 
-  server discards its in-memory master key to unlock the data, so it is
+  server discards its in-memory root key to unlock the data, so it is
 
   physically blocked from responding to operations unsealed.
 ---
@@ -16,11 +16,11 @@ description: >-
 
 The `operator seal` seals the Vault server. Sealing tells the Vault server to
 stop responding to any operations until it is unsealed. When sealed, the Vault
-server discards its in-memory master key to unlock the data, so it is physically
+server discards its in-memory root key to unlock the data, so it is physically
 blocked from responding to operations unsealed.
 
 If an unseal is in progress, sealing the Vault will reset the unsealing process.
-Users will have to re-enter their portions of the master key again.
+Users will have to re-enter their portions of the root key again.
 
 This command does nothing if the Vault server is already sealed.
 

website/content/docs/commands/operator/unseal.mdx

@@ -2,13 +2,13 @@
 layout: docs
 page_title: operator unseal - Command
 description: |-
-  The "operator unseal" allows the user to provide a portion of the master key
+  The "operator unseal" allows the user to provide a portion of the root key
   to unseal a Vault server.
 ---
 
 # operator unseal
 
-The `operator unseal` allows the user to provide a portion of the master key to
+The `operator unseal` allows the user to provide a portion of the root key to
 unseal a Vault server. Vault starts in a sealed state. It cannot perform
 operations until it is unsealed. This command accepts a portion of the master
 key (an "unseal key").