Add missing target="_blank" (multiline links)

* Multiline links were not captured in the batch regex replacement.

Author: riccardoporreca

roxygen-guidelines.Rmd

@@ -26,7 +26,7 @@ This is based on:
 
 - **roxygen2** vignettes: `browseVignettes("roxygen2")`, in particular
 [Generating Rd
-files](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html).
+files](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html){target="_blank"}.
 - The [tidyverse style guide](https://style.tidyverse.org/documentation.html){target="_blank"}.
 - Package development experience.
 
@@ -141,7 +141,7 @@ Several techniques and tools are available to enable and support a more
 consistent and maintainable documentation.
 
 This can be described in detail in the [Do repeat
-yourself](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html#do-repeat-yourself)
+yourself](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html#do-repeat-yourself){target="_blank"}
 section of vignette _Generating Rd files_, and are summarized as follows
 
 - Cross-link documentation files with `@seealso` and `@family`.
@@ -180,7 +180,7 @@ man-roxygen/ex-<FUNCTION_NAME>.R`.
 
 Tags `@rdname` and `@describeIn` are a convenient way to document multiple
 functions in the same file. See the roxygen2 vignette [Generating Rd
-files](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html)
+files](https://cran.r-project.org/web/packages/roxygen2/vignettes/rd.html){target="_blank"}
 (`vignette("rd", package = "roxygen2")`) for more detail.
 
 In both case, not that `@title` should be specified only for the _main_

version-stable-r-development.Rmd

@@ -75,7 +75,7 @@ Linux systems), where only one R version (the latest release) exists.
 The idea is then to rely on the same version-stable rocker containers used for
 the deployments, using a containerized versioned RStudio instance for the local
 development. This is available through Rocker's [versioned
-stack](https://www.rocker-project.org/images/#the-versioned-stack), so we could
+stack](https://www.rocker-project.org/images/#the-versioned-stack){target="_blank"}, so we could
 use e.g. `rocker/rstudio:4.4.1`.
 
 Note that the same version-stable instance of RStudio can be used across all
@@ -111,7 +111,7 @@ container and be shared with it (and possibly multiple other containers), e.g. u
 `~/workspace` on the host machine and `/home/rstudio/workspace` in
 the container.
     - For this to work w/o [permission
-    issues](https://rocker-project.org/images/versioned/rstudio.html#userid-and-groupid),
+    issues](https://rocker-project.org/images/versioned/rstudio.html#userid-and-groupid){target="_blank"},
     the container user (`rstudio`) must match the UID of the host user (`$UID`). 
     This has the effect of setting the ownership of `~/workspace` on the host machine to `$UID` if it is not already owned by that user.
 - In order for the RStudio settings to persist if the container is recreated