Update cheatsheets

dog

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dog
+
+> DNS lookup utility.
+> It has colorful output, supports DNS-over-TLS and DNS-over-HTTPS protocols, and can emit JSON.
+> More information: <https://dns.lookup.dog>.
+
+- Lookup the IP(s) associated with a hostname (A records):
+
+`dog {{example.com}}`
+
+- Query the MX records type associated with a given domain name:
+
+`dog {{example.com}} MX`
+
+- Specify a specific DNS server to query (e.g. Cloudflare):
+
+`dog {{example.com}} MX @{{1.1.1.1}}`
+
+- Query over TCP rather than UDP:
+
+`dog {{example.com}} MX @{{1.1.1.1}} --tcp`
+
+- Query the MX records type associated with a given domain name over TCP using explicit arguments:
+
+`dog --query {{example.com}} --type MX --nameserver {{1.1.1.1}} --tcp`
+
+- Lookup the IP(s) associated with a hostname (A records) using DNS over HTTPS (DoH):
+
+`dog {{example.com}} --https @{{https://cloudflare-dns.com/dns-query}}`