docs(billing): update service documentation (#8597)

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PiperOrigin-RevId: 567050256

Source-Link: https://togithub.com/googleapis/googleapis/commit/5fcf6d86afd5b051cb19a19bce853a076ce35651

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/8be11531247b5330acb941ca3739b279c12aa1c1
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOGJlMTE1MzEyNDdiNTMzMGFjYjk0MWNhMzczOWIyNzljMTJhYTFjMSJ9

internal/generated/snippets/alloydb/apiv1/snippet_metadata.google.cloud.alloydb.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/alloydb/apiv1",
-    "version": "1.4.0",
+    "version": "1.5.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/alloydb/apiv1alpha/snippet_metadata.google.cloud.alloydb.v1alpha.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/alloydb/apiv1alpha",
-    "version": "1.4.0",
+    "version": "1.5.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/alloydb/apiv1beta/snippet_metadata.google.cloud.alloydb.v1beta.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/alloydb/apiv1beta",
-    "version": "1.4.0",
+    "version": "1.5.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/billing/apiv1/snippet_metadata.google.cloud.billing.v1.json

@@ -14,7 +14,7 @@
     {
       "regionTag": "cloudbilling_v1_generated_CloudBilling_CreateBillingAccount_sync",
       "title": "cloudbilling CreateBillingAccount Sample",
-      "description": "CreateBillingAccount this method creates [billing\nsubaccounts](https: //cloud.google.com/billing/docs/concepts#subaccounts).\n\nGoogle Cloud resellers should use the\nChannel Services APIs,\n[accounts.customers.create](https: //cloud.google.com/channel/docs/reference/rest/v1/accounts.customers/create)\nand\n[accounts.customers.entitlements.create](https: //cloud.google.com/channel/docs/reference/rest/v1/accounts.customers.entitlements/create).\n\nWhen creating a subaccount, the current authenticated user must have the\n`billing.accounts.update` IAM permission on the parent account, which is\ntypically given to billing account\n[administrators](https: //cloud.google.com/billing/docs/how-to/billing-access).\nThis method will return an error if the parent account has not been\nprovisioned as a reseller account.",
+      "description": "CreateBillingAccount this method creates [billing\nsubaccounts](https: //cloud.google.com/billing/docs/concepts#subaccounts).\n\nGoogle Cloud resellers should use the\nChannel Services APIs,\n[accounts.customers.create](https: //cloud.google.com/channel/docs/reference/rest/v1/accounts.customers/create)\nand\n[accounts.customers.entitlements.create](https: //cloud.google.com/channel/docs/reference/rest/v1/accounts.customers.entitlements/create).\n\nWhen creating a subaccount, the current authenticated user must have the\n`billing.accounts.update` IAM permission on the parent account, which is\ntypically given to billing account\n[administrators](https: //cloud.google.com/billing/docs/how-to/billing-access).\nThis method will return an error if the parent account has not been\nprovisioned for subaccounts.",
       "file": "CloudBillingClient/CreateBillingAccount/main.go",
       "language": "GO",
       "clientMethod": {

internal/generated/snippets/config/apiv1/snippet_metadata.google.cloud.config.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/config/apiv1",
-    "version": "0.1.0",
+    "version": "0.1.1",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/dataproc/apiv1/snippet_metadata.google.cloud.dataproc.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/dataproc/v2/apiv1",
-    "version": "2.1.0",
+    "version": "2.2.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/iap/apiv1/snippet_metadata.google.cloud.iap.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/iap/apiv1",
-    "version": "1.8.1",
+    "version": "1.9.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/migrationcenter/apiv1/snippet_metadata.google.cloud.migrationcenter.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/migrationcenter/apiv1",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/rapidmigrationassessment/apiv1/snippet_metadata.google.cloud.rapidmigrationassessment.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/rapidmigrationassessment/apiv1",
-    "version": "1.0.0",
+    "version": "1.0.1",
     "language": "GO",
     "apis": [
       {

internal/generated/snippets/serviceusage/apiv1/snippet_metadata.google.api.serviceusage.v1.json

@@ -1,7 +1,7 @@
 {
   "clientLibrary": {
     "name": "cloud.google.com/go/serviceusage/apiv1",
-    "version": "1.7.1",
+    "version": "1.8.0",
     "language": "GO",
     "apis": [
       {