Formatted and removed lints from devicelab README.md (#117239)

dev/devicelab/README.md

@@ -7,29 +7,36 @@ the tests are referred to as "tasks" in the API, but since we primarily use it
 for testing, this document refers to them as "tests".
 
 Current statuses for the devicelab are available at
-https://flutter-dashboard.appspot.com/#/build. See [dashboard user guide](https://github.com/flutter/cocoon/blob/master/app_flutter/USER_GUIDE.md)
+<https://flutter-dashboard.appspot.com/#/build>. See [dashboard user
+guide](https://github.com/flutter/cocoon/blob/master/app_flutter/USER_GUIDE.md)
 for information on using the dashboards.
 
 ## Table of Contents
+
 * [How the DeviceLab runs tests](#how-the-devicelab-runs-tests)
 * [Running tests locally](#running-tests-locally)
 * [Writing tests](#writing-tests)
-* [Adding tests to continuous integration](#adding-tests-to-continuous-integration)
+* [Adding tests to continuous
+  integration](#adding-tests-to-continuous-integration)
 * [Adding tests to presubmit](#adding-tests-to-presubmit)
 
-
 ## How the DeviceLab runs tests
 
-DeviceLab tests are run against physical devices in Flutter's lab (the "DeviceLab").
+DeviceLab tests are run against physical devices in Flutter's lab (the
+"DeviceLab").
 
-Tasks specify the type of device they are to run on (`linux_android`, `mac_ios`, `mac_android`, `windows_android`, etc).
-When a device in the lab is free, it will pickup tasks that need to be completed.
+Tasks specify the type of device they are to run on (`linux_android`, `mac_ios`,
+`mac_android`, `windows_android`, etc). When a device in the lab is free, it
+will pickup tasks that need to be completed.
 
-1. If the task succeeds, the test runner reports the success and uploads its performance metrics to Flutter's infrastructure. Not
-all tasks record performance metrics.
-2. If task fails, an auto rerun happens. Whenever the last run succeeds, the task will be reported as a success. For this case,
-a flake will be flagged and populated to the test result.
-3. If the task fails in all reruns, the test runner reports the failure to Flutter's infrastructure and no performance metrics are collected
+1. If the task succeeds, the test runner reports the success and uploads its
+performance metrics to Flutter's infrastructure. Not all tasks record
+performance metrics.
+2. If task fails, an auto rerun happens. Whenever the last run succeeds, the
+task will be reported as a success. For this case, a flake will be flagged and
+populated to the test result.
+3. If the task fails in all reruns, the test runner reports the failure to
+   Flutter's infrastructure and no performance metrics are collected
 
 ## Running tests locally
 
@@ -63,10 +70,11 @@ To run a test, use option `-t` (`--task`):
 
 Where `NAME_OR_PATH_OF_TEST` can be either of:
 
-- the _name_ of a task, which is a file's basename in `bin/tasks`. Example: `complex_layout__start_up`.
-- the path to a Dart _file_ corresponding to a task, which resides in `bin/tasks`.
-  Tip: most shells support path auto-completion using the Tab key. Example:
-  `bin/tasks/complex_layout__start_up.dart`.
+* the _name_ of a task, which is a file's basename in `bin/tasks`. Example:
+  `complex_layout__start_up`.
+* the path to a Dart _file_ corresponding to a task, which resides in
+  `bin/tasks`. Tip: most shells support path auto-completion using the Tab key.
+  Example: `bin/tasks/complex_layout__start_up.dart`.
 
 To run multiple tests, repeat option `-t` (`--task`) multiple times:
 
@@ -107,19 +115,19 @@ Example:
 
 The `--ab=10` tells the runner to run an A/B test 10 times.
 
-`--local-engine=host_debug_unopt` tells the A/B test to use the `host_debug_unopt`
-engine build. `--local-engine` is required for A/B test.
+`--local-engine=host_debug_unopt` tells the A/B test to use the
+`host_debug_unopt` engine build. `--local-engine` is required for A/B test.
 
-`--ab-result-file=filename` can be used to provide an alternate location to output
-the JSON results file (defaults to `ABresults#.json`). A single `#` character can be
-used to indicate where to insert a serial number if a file with that name already
-exists, otherwise, the file will be overwritten.
+`--ab-result-file=filename` can be used to provide an alternate location to
+output the JSON results file (defaults to `ABresults#.json`). A single `#`
+character can be used to indicate where to insert a serial number if a file with
+that name already exists, otherwise, the file will be overwritten.
 
 A/B can run exactly one task. Multiple tasks are not supported.
 
 Example output:
 
-```
+```text
 Score	Average A (noise)	Average B (noise)	Speed-up
 bench_card_infinite_scroll.canvaskit.drawFrameDuration.average	2900.20 (8.44%)	2426.70 (8.94%)	1.20x
 bench_card_infinite_scroll.canvaskit.totalUiFrame.average	4964.00 (6.29%)	4098.00 (8.03%)	1.21x
@@ -142,13 +150,14 @@ Summarize tool example:
     ABresults.json ABresults1.json ABresults2.json ...
 ```
 
-`--[no-]tsv-table` tells the tool to print the summary in a table with tabs for easy spreadsheet
-entry. (defaults to on)
+`--[no-]tsv-table` tells the tool to print the summary in a table with tabs for
+easy spreadsheet entry. (defaults to on)
 
-`--[no-]raw-summary` tells the tool to print all per-run data collected by the A/B test formatted
-with tabs for easy spreadsheet entry. (defaults to on)
+`--[no-]raw-summary` tells the tool to print all per-run data collected by the
+A/B test formatted with tabs for easy spreadsheet entry. (defaults to on)
 
-Multiple trailing filenames can be specified and each such results file will be processed in turn.
+Multiple trailing filenames can be specified and each such results file will be
+processed in turn.
 
 ## Reproducing broken builds locally
 
@@ -208,7 +217,7 @@ _TASK_- the name of your test that also matches the name of the
 
 1. Add target to
    [.ci.yaml](https://github.com/flutter/flutter/blob/master/.ci.yaml)
-   - Mirror an existing one that has the recipe `devicelab_drone`
+   * Mirror an existing one that has the recipe `devicelab_drone`
 
 If your test needs to run on multiple operating systems, create a separate
 target for each operating system.