docs: fix typos and duplicated words in comments and guide (#11502)

- fix "wether" -> "whether" and "dependant" -> "dependent" in RedisGateway JSDoc
- fix duplicated "the" in useful-packages guide
- fix duplicated "for" in two internal JSDoc param descriptions

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/discord.js/src/structures/CommandInteractionOptionResolver.js

@@ -86,7 +86,7 @@ class CommandInteractionOptionResolver {
    * Gets an option by name and property and checks its type.
    * @param {string} name The name of the option.
    * @param {ApplicationCommandOptionType[]} allowedTypes The allowed types of the option.
-   * @param {string[]} properties The properties to check for for `required`.
+   * @param {string[]} properties The properties to check for `required`.
    * @param {boolean} required Whether to throw an error if the option is not found.
    * @returns {?CommandInteractionOption} The option, if found.
    * @private

packages/discord.js/src/structures/ModalSubmitFields.js

@@ -72,7 +72,7 @@ class ModalSubmitFields {
    *
    * @param {string} customId The custom id of the component.
    * @param {ComponentType[]} allowedTypes The allowed types of the component.
-   * @param {string[]} properties The properties to check for for `required`.
+   * @param {string[]} properties The properties to check for `required`.
    * @param {boolean} required Whether to throw an error if the component value(s) are not found.
    * @returns {ModalData} The option, if found.
    * @private