[Uptime Ui] improve alignment of text in columns

[katrin-freihofner]

Kibana version:
8.0.0

Elasticsearch version:
8.0.0

Browser version:
75.0.3770.100 (Official Build) (64-bit)

Browser OS version:
Mac

Original install method (e.g. download page, yum, from source, etc.):
Using the 8.0.0-SNAPSHOT

Describe the bug:
The text and numbers in the monitors table is not correctly aligned. This makes it hard to read. Furthermore the units within the duration column are missing.

Expected behavior:
Text in tables should be left aligned. Numbers should be right aligned. This ensures good readability and makes it easier to compare numbers.

Screenshots (if relevant):

The update could look like this

[elasticmachine]

Pinging @elastic/uptime