fix: Minor typos in datetime widget page (#90)

* doc: Fix typos on datetime page

* chore: Remove trailing whitespace from datetime doc

Author: mattcen

content/docs/widgets/datetime.md

@@ -7,17 +7,17 @@ The datetime widget translates a datetime picker to a datetime string.
 
 **Name:** `datetime`
 
-**UI:** datetime-local input / date inupt / time input
+**UI:** datetime-local input / date input / time input
 
 **Data type:** [Day.js](https://day.js.org/)-formatted datetime string
 
 **Options:**
 
   - `default`: accepts a datetime string, or `'{{now}}'` to fill in the current datetime; otherwise defaults to empty string.
-    
-    <small>Unitl 3.2.1 it defaults to current datetime. To get an empty field, set default to empty string.</small>
+
+    <small>Until 3.2.1 it defaults to current datetime. To get an empty field, set default to empty string.</small>
   - `format`: sets storage format, displays the full date and time input in the UI. Accepts [Day.js formats](https://day.js.org/docs/en/display/format); defaults to ISO8601 (if supported by output format). If set, `date_format` and `time_format` are not used.
-  - `date_format`: sets storage format and UI input type as date picker (without time). Boolean or [Day.js formats](https://day.js.org/docs/en/display/format). 
+  - `date_format`: sets storage format and UI input type as date picker (without time). Boolean or [Day.js formats](https://day.js.org/docs/en/display/format).
   - `time_format`: sets storage format and UI input type as time picker (without date). Boolean or [Day.js formats](https://day.js.org/docs/en/display/format). If used together with `date_format`, the UI input will be a full datetime picker.
   - `picker_utc`: _(default: `false`)_ when set to `true`, the datetime picker will display times in UTC. When `false`, the datetime picker will display times in the user's local timezone. When using date-only formats, it can be helpful to set this to `true` so users in all time zones will see the same date in the datetime picker.