Fixed one typo and one formatting issue
minor #3640 [minor] fixed one typo and one formatting issue (javiereguiluz)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #3640).

Discussion
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[minor] fixed one typo and one formatting issue

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3+
| Fixed tickets | no

Commits
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8627811 Fixed one typo and one formatting issue