Fix 2 tiny typos (#263)

* Fix typo overriden to overridden

* Fix typo wll to will

Author: remlapmot

vignettes/dynamic-metadata.qmd

@@ -57,7 +57,7 @@ xfun::fenced_block(
 ) |> gsub(pattern = "^\\s+", replacement = "") |> cat(sep = "\n")
 ```
 
-Quarto will process this metadata block as an additional metadata block to the frontmatter one. And so, it wll make the metadata available for use throughout the document.
+Quarto will process this metadata block as an additional metadata block to the frontmatter one. And so, it will make the metadata available for use throughout the document.
 
 They can be used in various ways, such as in shortcodes or conditional content.
 

vignettes/hello.qmd

@@ -42,7 +42,7 @@ format:
     css: custom.css
 ```
 
-All those configurations are set in way that they can't be overriden by the YAML header in the vignette source file and only new configurations can be set. Typical examples for such configurations are adding a [table of contents](https://quarto.org/docs/reference/formats/html.html#table-of-contents) or enabling the rendering of mathematical notation in the [format options](https://quarto.org/docs/reference/formats/html.html#format-options), e.g., by MathJax. Specifically, these two options can be set in the following way:
+All those configurations are set in way that they can't be overridden by the YAML header in the vignette source file and only new configurations can be set. Typical examples for such configurations are adding a [table of contents](https://quarto.org/docs/reference/formats/html.html#table-of-contents) or enabling the rendering of mathematical notation in the [format options](https://quarto.org/docs/reference/formats/html.html#format-options), e.g., by MathJax. Specifically, these two options can be set in the following way:
 
 ````yaml
 format: