Move pages under tldr, lint run.sh, update docs

tldr/httping

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# httping
+
+> Measure the latency and throughput of a web server.
+> More information: <https://manned.org/httping>.
+
+- Ping the specified URL:
+
+`httping -g {{url}}`
+
+- Ping the web server on `host` and `port`:
+
+`httping -h {{host}} -p {{port}}`
+
+- Ping the web server on `host` using a TLS connection:
+
+`httping -l -g https://{{host}}`
+
+- Ping the web server on `host` using HTTP basic authentication:
+
+`httping -g http://{{host}} -U {{username}} -P {{password}}`