Update cheatsheets

mongod

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mongod
+
+> The MongoDB database server.
+> More information: <https://docs.mongodb.com/manual/reference/program/mongod>.
+
+- Specify the storage directory (default: `/data/db` on Linux and macOS, `C:\data\db` on Windows):
+
+`mongod --dbpath {{path/to/directory}}`
+
+- Specify a configuration file:
+
+`mongod --config {{path/to/file}}`
+
+- Specify the port to listen on (default: 27017):
+
+`mongod --port {{port}}`
+
+- Specify the database profiling level. 0 is off, 1 is only slow operations, 2 is all (default: 0):
+
+`mongod --profile {{0|1|2}}`