docs wip write a temp version of subtract and fix minor errors

Author: EscapedGibbon

docs/API reference/Image/Comparison/subtract.md

@@ -1,27 +1,23 @@
-Method called `subtract` ,as the name suggests, takes another mask and makes a subtraction between each respective bit of the mask.
+Method called `subtract` ,as the name suggests, takes another image and makes a subtraction between each respective bit of both images.
 It works like this:
 
 ```ts
-let image = new Mask(3, 3, {
+let image = new Image(3, 3, {
   data: new Uint8Array([1, 1, 1, 1, 1, 1, 1, 1, 1]),
 });
-let mask2 = new Mask(3, 3, {
+let image2 = new Image(3, 3, {
   data: new Uint8Array([1, 1, 1, 2, 2, 2, 2, 2, 2]),
 });
-mask = mask.subtract(mask2);
-// expect mask to equal [0,0,0,1,1,1,1,1,1]
+mask = image.subtract(image2);
+// expect image to equal [0,0,0,1,1,1,1,1,1]
 ```
 
 :::caution
-Masks must have the same size for compatibility reasons.
-:::
-
-:::info
-Mask method calls already preexisting `subtract` function. To learn more about how the function works click on this link(link)
+Images must have the same size for compatibility reasons.
 :::
 
 ### Parameters and default values
 
-- [`mask`](https://image-js.github.io/image-js-typescript/classes/Mask.html#subtract 'github.io link')
+- [`image`](https://image-js.github.io/image-js-typescript/classes/Image.html#subtract 'github.io link')
 
-- [`options`](https://image-js.github.io/image-js-typescript/classes/Mask.html#subtract 'github.io link')
+- [`options`](https://image-js.github.io/image-js-typescript/classes/Image.html#subtract 'github.io link')

docs/API reference/Image/Morphology/morphologicalGradient.md

@@ -4,7 +4,7 @@ import MorphGradientDemo from './morphologicalGradient.demo.tsx'
 
 [The morphological gradient](https://en.wikipedia.org/wiki/Morphological_gradient 'wikipedia link on morphological gradient') is a mathematical operation used in image processing and mathematical morphology to highlight the boundaries of objects or regions within an image.
 It is a fundamental concept in morphological image analysis and is often used for tasks such as edge detection and image segmentation.
-The morphological gradient is based on the difference between an image after [dilation](./Dilate.md 'internal link on dilation') and the same image after [erosion](./Erode.md 'intenal link on erosion').
+The morphological gradient is based on the difference between an image after [dilation](./Dilate.md 'internal link on dilation') and the same image after [erosion](./Erode.md 'internal link on erosion').
 
 <MorphGradientDemo />