chore: tweak wording, fix config docs

Signed-off-by: Johan Haals <johan.haals@gmail.com>

.changeset/wild-buses-notice.md

@@ -2,4 +2,4 @@
 '@backstage/backend-defaults': patch
 ---
 
-Added the option to skip database migrations by setting `skipMigrations: true` in options. This can be done globally in the database config or by plugin id.
+Added the option to skip database migrations by setting `skipMigrations: true` in config. This can be done globally in the database config or by plugin id.

packages/backend-defaults/config.d.ts

@@ -425,10 +425,7 @@ export interface Config {
     pluginDivisionMode?: 'database' | 'schema';
     /** Configures the ownership of newly created schemas in pg databases. */
     role?: string;
-    /**
-     * Skip running database migrations.
-     * NOTE: Currently only supported by the `pg` client.
-     */
+    /** Skip running database migrations. */
     skipMigrations?: boolean;
     /**
      * Arbitrary config object to pass to knex when initializing
@@ -468,10 +465,7 @@ export interface Config {
         knexConfig?: object;
         /** Configures the ownership of newly created schemas in pg databases. */
         role?: string;
-        /**
-         * Skip running database migrations.
-         * NOTE: Currently only supported by the `pg` client.
-         */
+        /** Skip running database migrations. */
         skipMigrations?: boolean;
       };
     };