Update ecommerce.rst

[FelipeAdachi]

minor typos in the documentation

Description

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The commits in this pull request will

Changes

• Imperative commit or change title (commit ID)
  • Add some bullet points to explain the change
• Next commit or change (commit ID)

Related

Relates to organization/repo#number

Closes organization/repo#number

• [ ] I have reviewed the Guidelines for Contributing and the Code of Conduct.