DOCS: Description of example in skimage.feature.graycomatrix documentation does not seem to match the code

[FedericoWZhaw]

Description:

In the scikit image documentation on the gray-level co-occurrence matrix, the Example states: "Compute 2 GLCMs: One for a 1-pixel offset to the right, and one for a 1-pixel offset upwards."

The code below however computes 4 GLCMs
result = graycomatrix(image, [1], [0, np.pi/4, np.pi/2, 3*np.pi/4], levels=4).

Should it not just be
result = graycomatrix(image, [1], [0, np.pi/2], levels=4)?

[lagru]

Thanks for the hint @FedericoWZhaw! #955 makes me think that that when the other angles were added the comment was just forgotten. Would you like to make a PR that fixes the comment? 😊 🙏

[FedericoWZhaw]

Made the PR: main...FedericoWZhaw:scikit-image:graycomatrix-docfix#7293