correct license phyloregion r package

common/r-packages.scm

@@ -288,7 +288,7 @@
 for mixed variable-type data according to Z.Huang (1998): Extensions to the
 k-Means Algorithm for Clustering Large Data Sets with Categorical Variables,
 Data Mining and Knowledge Discovery 2, 283-304, <DOI:10.1023/A:1009769707641>.")
-    (license gpl2+)))
+    (license license:gpl2+)))
 
 (define-public r-betapart
   (package
@@ -320,7 +320,7 @@ Data Mining and Knowledge Discovery 2, 283-304, <DOI:10.1023/A:1009769707641>.")
 matrices) and multiple-site dissimilarities, separating the turnover and
 nestedness-resultant components of taxonomic (incidence and abundance based),
 functional and phylogenetic beta diversity.")
-    (license gpl2+)))
+    (license license:gpl2+)))
 
 (define-public r-phyloregion
   (package
@@ -362,4 +362,4 @@ biogeographical regionalization.  Additionally, the package contains fast and
 efficient functions to compute more standard conservation measures such as
 phylogenetic diversity, phylogenetic endemism, evolutionary distinctiveness and
 global endangerment, as well as compositional turnover (e.g., beta diversity).")
-    (license agpl3+)))
\ No newline at end of file
+    (license license:agpl3+)))
\ No newline at end of file