fix(config): add missing descriptions (#12060)

lib/config/presets/internal/compatibility.ts

@@ -2,6 +2,8 @@ import { Preset } from '../types';
 
 export const presets: Record<string, Preset> = {
   additionalBranchPrefix: {
+    description:
+      'Backwards-compatibility preset to restore additionalBranchPrefix settings for multiple managers which were removed in v25',
     buildkite: {
       additionalBranchPrefix: 'buildkite-',
     },

lib/config/presets/internal/helpers.ts

@@ -2,6 +2,7 @@ import type { Preset } from '../types';
 
 export const presets: Record<string, Preset> = {
   disableTypesNodeMajor: {
+    description: 'Disable major updates to <code>@types/node</code>',
     packageRules: [
       {
         matchPackageNames: ['@types/node'],

lib/config/presets/internal/workarounds.ts

@@ -14,6 +14,7 @@ export const presets: Record<string, Preset> = {
     ],
   },
   mavenCommonsAncientVersion: {
+    description: 'Fix some problems with very old Maven commons versions',
     packageRules: [
       {
         matchDatasources: ['maven', 'sbt-package'],