Fix documentation note about links on r-devel (#356)

# Pull Request

Fixes #335 

The links are correctly resolved to the package and `R CMD check`
doesn't complain (with 2024-12-07 r87428 ucrt)

See
insightsengineering/teal#1420 (comment)
for a longer explanation.

R/teal_data-class.R

@@ -16,10 +16,10 @@ setOldClass("join_keys")
 #'
 #' @slot .xData (`environment`) environment containing data sets and possibly
 #'  auxiliary variables.
-#'  Access variables with [get()], [`$`], [get_var()] or [`[[`].
+#'  Access variables with [get()], [`$`], [teal.code::get_var()] or [`[[`].
 #'  No setter provided. Evaluate code to add variables into `@.xData`.
 #' @slot code (`list` of `character`) representing code necessary to reproduce the contents of `qenv`.
-#'  Access with [get_code()].
+#'  Access with [teal.code::get_code()].
 #'  No setter provided. Evaluate code to append code to the slot.
 #' @slot join_keys (`join_keys`) object specifying joining keys for data sets in
 #' `@.xData`.