ICU-23169 Fixes two typos in datetime patterns

[atnbueno]

"TIme" -> "Time" (lowercase i)
"' '" -> "''" (deleted space)

Checklist

• Required: Issue filed: ICU-23169
• Required: The PR title must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• Required: Each commit message must be prefixed with a JIRA Issue number. Example: "ICU-1234 Fix xyz"
• Issue accepted (done by Technical Committee after discussion)
• Tests included, if applicable
• API docs and/or User Guide docs changed or added, if applicable

[richgillam]

Please include a link to the ticket in the description of this PR.

[echeran]

@atnbueno Would you be able to amend the single commit's message to begin with "ICU-23169 " and force push? Alternatively, we could do that on your branch on your behalf to push it over the finish line.

[atnbueno]

@echeran I’ve updated the commit message but right now I can only access the web UI, so I don’t think I can force push or squash the changes. Please go ahead.