fix(account nerdgraph): changing some field names

src/content/docs/apis/nerdgraph/examples/manage-accounts-nerdgraph.mdx

@@ -35,7 +35,7 @@ This tutorial will show you how to:
 ## Tips on terms and fields [#field-definitions]
 
 Some tips about some of the fields used in these requests: 
-* The `administrableAccounts` field is simply a term for the accounts in an organization. It is synonymous with "accounts."
+* The `managedAccount` and `managedAccounts` fields are simply terms for the accounts in an organization. They're synonymous with "accounts."
 * The `regionCode` field refers to [the data center used by an account](/docs/accounts/accounts-billing/account-setup/choose-your-data-center): `US` or `EU`. Note that an organization can only use a single data center: there can't be accounts that use diffrent data centers in a single organization. 
 
 Note that the [NerdGraph explorer](/docs/apis/nerdgraph/get-started/introduction-new-relic-nerdgraph/#explorer) has built-in docs that defines fields.
@@ -48,10 +48,12 @@ Here’s an example of returning the accounts in your organization:
 {
   actor {
     organization {
-      administrableAccounts {
-        id
-        name
-        regionCode
+      accountManagement {
+        managedAccounts {
+          name
+          id
+          regionCode
+        }
       }
     }
   }
@@ -64,14 +66,13 @@ Here’s an example of how to create an account. Before creating an account, mak
 
 ```
 mutation {
-  administrableAccountsCreateAccount(administrableAccount: {name: "acme_dev"}) {
-    administrableAccount {
+  accountManagementCreateAccount(managedAccount: {name: "<var>NEW_ACCOUNT_NAME</var>"}) {
+    managedAccount {
       id
       name
       regionCode
     }
   }
-}
 ```
 
 ## Rename an account [#rename-accounts]
@@ -80,8 +81,8 @@ Here’s an example of how to rename an account.
 
 ```
 mutation {
-  administrableAccountsUpdateAccount(administrableAccount: {id: 111, name: ""}) {
-    administrableAccount {
+  accountManagementUpdateAccount(managedAccount: {name: "<var>UPDATED_ACCOUNT_NAME</var>", id: <var>101010101</var>}) {
+    managedAccount {
       id
       name
       regionCode