minor updates

docs/auth/storing-credentials.qmd

@@ -10,15 +10,15 @@ The packages in the R-ArcGIS Bridge rely heavily on **environment variables**. E
 
 ## Environment variables 
 
-The package `{arcgisutils}` is responsible for handling authorization for all of the R packages. With it, there are a number of different mechanism for authorizing each requiring a different combination of environment variables. 
+The package `{arcgisutils}` is responsible for handling authorization for all of the R packages. With it, there are a number of different mechanisms for authorizing each requiring a different combination of environment variables. 
 
-Environment variables are fetched using `Sys.getenv()`. They are key-value pairs. For example, to find the path of R run
+Environment variables are fetched using `Sys.getenv()`. They are key-value pairs. For example, to find the path of R run:
 
 ```{r}
 Sys.getenv("R_HOME")
 ```
 
-Or to set a value use `Sys.setenv()`
+Or to set a value use `Sys.setenv()`:
 
 ```{r}
 Sys.setenv("ANSWER_TO_EVERYTHING" = 42)
@@ -31,7 +31,7 @@ Sys.getenv("ANSWER_TO_EVERYTHING")
 Environment variables should _**never**_ be included in your code.
 We recommend using an `.Renviron` file at minimum to store your credentials.
 
-You can use the `usethis` to edit the file. Ensure it is installed and run the following in your text editor:
+You can use the `usethis` package to edit the file. Ensure it is installed and run the following in your text editor:
 
 :::{.callout-warning}
 If you modify environment variables you will need to restart your R session for the change to be registered.