docs: align readme node.js with package.json

[MikeMcC399]

Issue

• PR feat!: Require Node.js ^18.18.0 || ^20.9.0 || >=21.1.0 #169 bumped the Node.js requirements to

generator-eslint/package.json

Lines 53 to 55 in 92a44af

	"engines": {
	"node": "^18.18.0 || ^20.9.0 || >=21.1.0"
	},

whilst README > Installation was left unchanged stating

Requirements

• Node.js ^14.17.0 || ^16.0.0 || >= 18.0.0

Change

README > Installation is updated to read

Requirements

• Node.js ^18.18.0 || ^20.9.0 || >=21.1.0

in line with package.json

[aladdin-add]

yes, I had updated it in #179.

[MikeMcC399]

@aladdin-add

• If feat: update templates for eslint v9 #179 will be merged soon, then you could skip over this PR and close it.
• If feat: update templates for eslint v9 #179 will be delayed significantly, I think it makes sense to correct the information now.

[aladdin-add]

right, I'm merging it now.