[Sync to prerelease] Remove stray "it", add commas, use less repetitive wording

docs/authoring/figures.qmd

@@ -252,7 +252,7 @@ Note that the last paragraph in the div block is used as the figure caption.
 
 This section describes some figure handling options that are specific to LaTeX output.
 
-One very important thing to note is that using the `fig-env` and `fig-pos` options described below will trigger the creation of a LaTeX floating environment (most often `\begin{figure}`). Depending upon where this LaTeX is generated it (e.g. is it within another `\begin{figure}`) this could generate invalid LaTeX. To be on the safe side these attributes should typically only be used for images at the very top level of your document.
+One very important thing to note is that using the `fig-env` and `fig-pos` options described below will trigger the creation of a LaTeX floating environment (most often `\begin{figure}`). Depending upon where this LaTeX is generated (e.g., within another `\begin{figure}`), this could produce invalid LaTeX. To be on the safe side, these attributes should typically only be used for images at the very top level of your document.
 
 ### Environments