Fix the *.xml file generation command

[georgechenchao]

---

This checklist is used to make sure that common guidelines for a pull request are followed.

General Guidelines

• The PR has modified HISTORY.rst with an appropriate description of the change (see Modifying change log).

Command Guidelines

• Each command and parameter has a meaningful description.
• Each new command has a test.

(see Authoring Command Modules)

[msftclas]

@georgechenchao,
Thanks for your contribution as a Microsoft full-time employee or intern. You do not need to sign a CLA.
Thanks,
Microsoft Pull Request Bot

[codecov-io]

Codecov Report

Merging #4261 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4261      +/-   ##
==========================================
+ Coverage   70.06%   70.09%   +0.02%     
==========================================
  Files         475      475              
  Lines       29617    29617              
  Branches     4542     4542              
==========================================
+ Hits        20751    20759       +8     
+ Misses       7423     7413      -10     
- Partials     1443     1445       +2

Impacted Files	Coverage Δ
...dback/azure/cli/command_modules/feedback/custom.py	31.25% <0%> (ø)	⬆️
...li-cloud/azure/cli/command_modules/cloud/custom.py	13.79% <0%> (ø)	⬆️
...nent/azure/cli/command_modules/component/custom.py	16.26% <0%> (ø)	⬆️
src/azure-cli-core/azure/cli/core/util.py	69.73% <0%> (ø)	⬆️
src/azure-cli-core/azure/cli/core/cloud.py	73.18% <0%> (+2.27%)	⬆️
...c/azure-cli-testsdk/azure/cli/testsdk/utilities.py	53.84% <0%> (+7.69%)	⬆️

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