small wording inconsistencies

[spereverde]

Describe the bug This is a minor bug I found while adding translations. Inconsistent spelling for some words inside the package and translations.

To Reproduce Steps to reproduce the behavior:

• Check the msgids inside the base volto.po file

Expected behavior A clear and consistent use of terms used in the UI.

Screenshots

• url - URL: msgid "Existing alternative urls for this item" - msgid "External URL"
• Add-on, Add-On, Addon : msgid "Add-on Configuration" - msgid "Add-Ons" - msgid "Addon could not be upgraded"
• also colis used instead of column (Insert col before): https://github.com/plone/volto/blob/master/src/components/manage/Blocks/Table/Edit.jsx#L108
• Fullname or Full name?
• • Short Name or Short name?
• Log In or Log in or Login?
• Moderate Comments or Moderate comments
• No results found. or No results found (with or without the dot at the end)
• is it ´Set my password´ or ´Set your password´ or do they serve different use cases?
• Sort By or Sort By: or Sort on
• Type text... or Type text… (various inconsistent usages of either 3 dots or the 1 character for 3 dots)
• Update installed addons or Update installed addons (with or without the: at the end)
• User name or username
• "Weeek day of month"

[stevepiercy]

To be consistent with Plone Documentation spellings, I would suggest the following.

• URL is an acronym and should be capitalized.
• Add-on or add-on and their plurals, using correct hyphenation.
• column (avoid abbreviations and shortened words, such as "info" for "information")