Revert: use correctly-named anchors

vignettes/datatable-importing.Rmd

@@ -15,7 +15,7 @@ h2 {
 }
 </style>
 
-This document is focused on using `data.table` as a dependency in other R packages. If you are interested in using `data.table` C code from a non-R application, or in calling its C functions directly, jump to the [last section](#importing-from-non-r-applications-non-r-api) of this vignette.
+This document is focused on using `data.table` as a dependency in other R packages. If you are interested in using `data.table` C code from a non-R application, or in calling its C functions directly, jump to the [last section](#non-r-api) of this vignette.
 
 Importing `data.table` is no different from importing other R packages. This vignette is meant to answer the most common questions arising around that subject; the lessons presented here can be applied to other R packages.
 
@@ -138,7 +138,7 @@ The option mechanism in R is _global_. Meaning that if a user sets a `data.table
 
 If you face any problems in creating a package that uses data.table, please confirm that the problem is reproducible in a clean R session using the R console: `R CMD check package.name`.
 
-Some of the most common issues developers are facing are usually related to helper tools that are meant to automate some package development tasks, for example, using `roxygen` to generate your `NAMESPACE` file from metadata in the R code files. Others are related to helpers that build and check the package. Unfortunately, these helpers sometimes have unintended/hidden side effects which can obscure the source of your troubles. As such, be sure to double check using R console (run R on the command line) and ensure the import is defined in the `DESCRIPTION` and `NAMESPACE` files following the [instructions](#description-file-description) [above](#namespace-file-namespace).
+Some of the most common issues developers are facing are usually related to helper tools that are meant to automate some package development tasks, for example, using `roxygen` to generate your `NAMESPACE` file from metadata in the R code files. Others are related to helpers that build and check the package. Unfortunately, these helpers sometimes have unintended/hidden side effects which can obscure the source of your troubles. As such, be sure to double check using R console (run R on the command line) and ensure the import is defined in the `DESCRIPTION` and `NAMESPACE` files following the [instructions](#DESCRIPTION) [above](#NAMESPACE).
 
 If you are not able to reproduce problems you have using the plain R console build and check, you may try to get some support based on past issues we've encountered with `data.table` interacting with helper tools: [devtools#192](https://github.com/r-lib/devtools/issues/192) or [devtools#1472](https://github.com/r-lib/devtools/issues/1472).