Update cheatsheets

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dub
+
+> Package manager for D packages.
+> More information: <https://dub.pm/commandline>.
+
+- Interactively create a new D project:
+
+`dub init {{project_name}}`
+
+- Non-interactively create a new D project:
+
+`dub init {{project_name}} -n`
+
+- Build and run a D project:
+
+`dub`
+
+- Install dependencies specified in a D project's `dub.json` or `dub.sdl` file:
+
+`dub fetch`
+
+- Update the dependencies in a D project:
+
+`dub upgrade`
+
+- Display help:
+
+`dub --help`