Update Roxygen 7.2.0 to 7.2.1

This seems to resolve the Roxygen issue for which RKorAPClient was
removed from CRAN:

Check Details
Version: 0.7.2
Check: HTML version of manual
Result: NOTE
    Found the following HTML validation problems:
RKorAPClient-package.html:23:4: Warning: <img> attribute "align" not
allowed for HTML5
RKorAPClient-package.html:23:4: Warning: <img> attribute "align" not
allowed for HTML5
Flavors: r-devel-linux-x86_64-debian-clang,
r-devel-linux-x86_64-debian-gcc

Change-Id: I801b13982d4924a6c8f311fcd7b58b2410e7df7e
diff --git a/NAMESPACE b/NAMESPACE
index bb89cd8..1efd608 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -2,6 +2,8 @@
 
 S3method(format,KorAPQuery)
 export("%>%")
+export(KorAPConnection)
+export(KorAPQuery)
 export(as_tibble)
 export(bind_cols)
 export(buildWebUIRequestUrl)