♻️💄 simplify KorAPConnection class instantiations to modern syntax

Update all class instantiations from `new("KorAPConnection")` to `KorAPConnection()`.
This is possible with R >= 4.0.

Change-Id: I01131fb32045e084cafbb9e05cd8ba99f8f20f1b
diff --git a/R/collocationAnalysis.R b/R/collocationAnalysis.R
index b844556..378fd0a 100644
--- a/R/collocationAnalysis.R
+++ b/R/collocationAnalysis.R
@@ -53,7 +53,7 @@
 #' \dontrun{
 #'
 #'  # Find top collocates of "Packung" inside and outside the sports domain.
-#'  new("KorAPConnection", verbose = TRUE) %>%
+#'  KorAPConnection(verbose = TRUE) %>%
 #'   collocationAnalysis("Packung", vc=c("textClass=sport", "textClass!=sport"),
 #'                       leftContextSize=1, rightContextSize=1, topCollocatesLimit=20) %>%
 #'   dplyr::filter(logDice >= 5)
@@ -63,7 +63,7 @@
 #'
 #' # Identify the most prominent light verb construction with "in ... setzen".
 #' # Note that, currently, the use of focus function disallows exactFrequencies.
-#' new("KorAPConnection", verbose = TRUE) %>%
+#' KorAPConnection(verbose = TRUE) %>%
 #'   collocationAnalysis("focus(in [tt/p=NN] {[tt/l=setzen]})",
 #'     leftContextSize=1, rightContextSize=0, exactFrequencies=FALSE, topCollocatesLimit=20)
 #' }