fix typo

README.md

@@ -16,7 +16,7 @@ Automagical css image gallery in [Hugo](https://gohugo.io/) using shortcodes. No
 - Use the `{{< snap-dir >}}` shortcode inside a `{{< gallery >}}` to show all containing files nicely
 - Next/prev buttons in galleries
 - The gallery is responsive, images are scaled/cropped to fill square tiles
-- Pretty captions outside and inside lightbox 
+- Pretty captions outside and inside lightbox
 - Only requires 4kB of CSS (unminified; you can minify it if you want)
 - CSS is automatically loaded the first time you use the `{{< figure >}}` shortcode on each page
 
@@ -35,7 +35,7 @@ theme = [ "hugo-sustain", "hugo-snap-gallery" ]
 Specifying your image files:
 
 - `{{< figure src="image.jpg" >}}` will just show the image with no caption, and open the full version of it when clicked
-- `{{< figure src="image.jpg" capation="My description" >}}` will show the image and open the full version of it when clicked, and shows the caption text in both views. Markdown is possible
+- `{{< figure src="image.jpg" caption="My description" >}}` will show the image and open the full version of it when clicked, and shows the caption text in both views. Markdown is possible
 - `{{< figure src="image.jpg" link="http://example.com" >}}` will use `image.jpg` for thumbnail and link to `http://example.com` when clicked
 
 Optional parameters: