linting: file must end on a newline

Signed-off-by: entlein <einentlein@gmail.com>

Author: entlein

DEVELOPMENT.md

@@ -297,4 +297,4 @@ export PL_TESTING_ENV=dev
 You will be able to run any of the CLI commands using `bazel run`.
 
 - `bazel run //src/pixie_cli:px -- deploy` will be equivalent to `px deploy`
-- `bazel run //src/pixie_cli:px -- run px/cluster` is the same as `px run px/cluster`
+- `bazel run //src/pixie_cli:px -- run px/cluster` is the same as `px run px/cluster`