fixed typo in gradient of cost function #26

	name: Linting Notebooks

	on:
	push:
	branches:
	- master # Change this to the repository's main branch
	pull_request:
	branches:
	- master
	jobs:
	lint:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.12" # Change this to your desired Python version

	- name: Install dependencies
	run: \|
	pip install black==23.1.0 nbformat black[jupyter]
	continue-on-error: false

	- name: Find notebooks
	id: find-notebooks
	run: \|
	find . -name "*.ipynb" > notebooks.txt
	continue-on-error: true

	- name: Lint notebooks
	run: \|
	cat notebooks.txt \| xargs -I {} black --line-length 88 --check {}
	continue-on-error: true

	- name: Check lint results
	run: \|
	if grep -q "would reformat" notebooks.txt; then
	echo "Linting issues found. Run 'black' to auto-format the notebooks."
	exit 1
	else
	echo "All notebooks are properly formatted."
	fi

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