Update cheatsheets

sublist3r

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sublist3r
+
+> Fast subdomains enumeration tool for penetration testers.
+> More information: <https://github.com/aboul3la/Sublist3r>.
+
+- Find subdomains for a domain:
+
+`sublist3r --domain {{domain_name}}`
+
+- Find subdomains for a domain, also enabling brute force search:
+
+`sublist3r --domain {{domain_name}} --bruteforce`
+
+- Save the found subdomains to a text file:
+
+`sublist3r --domain {{domain_name}} --output {{path/to/output_file}}`
+
+- Display help:
+
+`sublist3r --help`