Update cheatsheets

rustup-target

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rustup target
+
+> Modify a toolchain's supported targets.
+> Without the `--toolchain` option `rustup` will use the default toolchain. See `rustup help toolchain` for more information about toolchains.
+> More information: <https://rust-lang.github.io/rustup>.
+
+- Add a target to a toolchain:
+
+`rustup target add --toolchain {{toolchain}} {{target}}`
+
+- Remove a target from a toolchain:
+
+`rustup target remove --toolchain {{toolchain}} {{target}}`
+
+- List available and installed targets for a toolchain:
+
+`rustup target list --toolchain {{toolchain}}`
+
+- List installed targets for a toolchain:
+
+`rustup target list --toolchain {{toolchain}} --installed`