removed windows and linux split subdir

.antidote/tests/test_cmd_update.md

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+# antidote update tests
+
+## Setup
+
+```zsh
+% source ./tests/_setup.zsh
+% source ./antidote.zsh
+%
+```
+
+## Update
+
+```zsh
+% antidote update
+Updating bundles...
+antidote: checking for updates: https://github.com/foo/bar
+antidote: checking for updates: https://github.com/foo/baz
+antidote: checking for updates: git@github.com:foo/qux
+antidote: checking for updates: https://github.com/getantidote/zsh-defer
+antidote: checking for updates: https://github.com/ohmy/ohmy
+Waiting for bundle updates to complete...
+
+Bundle updates complete.
+
+Updating antidote...
+antidote self-update complete.
+
+antidote version 1.9.7
+%
+```
+
+## Teardown
+
+```zsh
+% t_teardown
+%
+```