Add missing space in examples/nginx.conf

Co-authored-by: Daniel Edgar <[email protected]>

examples/nginx.conf

@@ -27,7 +27,7 @@ http {
   # `njs-acme` can use a shared dict to cache cert/key pairs to avoid
   # filesystem calls on TLS handshake.  If you want to use a shared zone name
   # that is not `acme`, then ensure the variable $njs_acme_shared_dict_zone_name
-  # also contains the desired name.  The zone size should beenough to store all
+  # also contains the desired name.  The zone size should be enough to store all
   # certs and keys. 1MB should be enough to store 100 certs/keys.
   js_shared_dict_zone zone=acme:1m;