Update cheatsheets

tsort

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tsort
+
+> Perform a topological sort.
+> A common use is to show the dependency order of nodes in a directed acyclic graph.
+> More information: <https://www.gnu.org/software/coreutils/tsort>.
+
+- Perform a topological sort consistent with a partial sort per line of input separated by blanks:
+
+`tsort {{path/to/file}}`
+
+- Perform a topological sort consistent on strings:
+
+`echo -e "{{UI Backend
+Backend Database
+Docs UI}}" | tsort`