Make sure to always fail gracefully if server not accessible

See CRAN policy:

Packages which use Internet resources should fail gracefully with an informative message
if the resource is not available or has changed (and not give a check warning nor error).

at https://cran.r-project.org/web/packages/policies.html

Change-Id: I0c346c75786b8f5392694337254d6f19f91d7caf
diff --git a/man/KorAPConnection-class.Rd b/man/KorAPConnection-class.Rd
index 75a165e..13ebf7e 100644
--- a/man/KorAPConnection-class.Rd
+++ b/man/KorAPConnection-class.Rd
@@ -32,7 +32,14 @@
 
 \S4method{clearAccessToken}{KorAPConnection}(kco)
 
-\S4method{apiCall}{KorAPConnection}(kco, url, json = TRUE, getHeaders = FALSE, cache = kco@cache)
+\S4method{apiCall}{KorAPConnection}(
+  kco,
+  url,
+  json = TRUE,
+  getHeaders = FALSE,
+  cache = kco@cache,
+  timeout = kco@timeout
+)
 
 \S4method{clearCache}{KorAPConnection}(kco)