man: Fix several whitespace formatting issues

Fix the following whitespace formatting issues:
- Indentation in scdoc source files should be done with tabs.
- Lines where there (clearly) should be a line break, need to have '++'
  at the end, but several were missing them.
- The scdoc manual (clearly) states that lines should be hard wrapped
  at 80 columns, but when line(s) are indented, that causes rendering
  issues. So lines where a line break was not clearly intended or
  clearly not intended, have been put onto 1 line to circumvent the
  rendering issue.

Link: https://lists.sr.ht/~sircmpwn/public-inbox/%3C8251560.T7Z3S40VBb%40bagend%3E

man/waybar-upower.5.scd

@@ -12,10 +12,10 @@ compatible devices in the tooltip.
 # CONFIGURATION
 
 *native-path*: ++
-    typeof: string ++
-    default: ++
-    The battery to monitor. Refer to the https://upower.freedesktop.org/docs/UpDevice.html#UpDevice--native-path ++
-    Can be obtained using `upower --dump`
+	typeof: string ++
+	default: ++
+	The battery to monitor. Refer to the https://upower.freedesktop.org/docs/UpDevice.html#UpDevice--native-path ++
+	Can be obtained using `upower --dump`
 
 *icon-size*: ++
 	typeof: integer ++