minor typo fix (#1951)

Author: CNMan

dnscrypt-proxy/example-dnscrypt-proxy.toml

@@ -128,7 +128,7 @@ keepalive = 30
 ## Multiple networks can be listed; they will be randomly chosen.
 ## These networks don't have to match your actual networks.
 
-# edns_client_subnet = ["0.0.0.0/0", "2001:db8::/32"]
+# edns_client_subnet = ['0.0.0.0/0', '2001:db8::/32']
 
 
 ## Response for blocked queries. Options are `refused`, `hinfo` (default) or
@@ -710,10 +710,10 @@ cache_neg_max_ttl = 600
   ## Another example source, with resolvers censoring some websites not appropriate for children
   ## This is a subset of the `public-resolvers` list, so enabling both is useless
 
-  #  [sources.'parental-control']
-  #    urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/parental-control.md', 'https://download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://ipv6.download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://download.dnscrypt.net/resolvers-list/v3/parental-control.md']
-  #    cache_file = 'parental-control.md'
-  #    minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
+  # [sources.'parental-control']
+  #   urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/parental-control.md', 'https://download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://ipv6.download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://download.dnscrypt.net/resolvers-list/v3/parental-control.md']
+  #   cache_file = 'parental-control.md'
+  #   minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'