bugfixing index

Author: trevorcampbell

source/reading.Rmd

@@ -1262,7 +1262,7 @@ the `httr2` package, and construct the query using the `request` function, which
 you will recognize the same query URL that we pasted into the browser earlier.
 We will then send the query using the `req_perform` function, and finally
 obtain a JSON representation of the response using the `resp_body_json` function.
-\index{httr2!req_perform}\index{httr2!resp_body_json}
+\index{httr2!req\_perform}\index{httr2!resp\_body\_json}
 
 <!-- we have disabled the below code for reproducibility, with hidden setting
 of the nasa_data object. But you can reproduce this using the DEMO_KEY key -->

source/viz.Rmd

@@ -774,7 +774,7 @@ To change the color palette,
 we add the `scale_color_brewer` layer indicating the palette we want to use.
 You can use
 this [color blindness simulator](https://www.color-blindness.com/coblis-color-blindness-simulator/) to check
-if your visualizations \index{color palette!color blindness simulator}
+if your visualizations \index{color blindness simulator}
 are color-blind friendly.
 Below we pick the `"Set2"` palette, with the result shown
 in Figure \@ref(fig:scatter-color-by-category-palette).