Move header description into header and rephrase misc desc

Author: Strokkur424

src/config/paper/spigot.yml

@@ -347,11 +347,12 @@ world-settings:
         The chance of lightning occurring during a thunderstorm, as a
         probability of 1/\<thunder-chance> per chunk, every tick.
     entity-activation-range:
-      description: >-
-        The distance in blocks from a player at which entities tick normally.
-        Outside this range, entities tick less frequently. Set to 0 or less to
-        disable activation-range throttling for loaded entities in that category,
-        causing them to tick normally regardless of player distance.
+      header:
+        message: >-
+          The distance in blocks from a player at which entities tick normally.
+          Outside this range, entities tick less frequently. Set to 0 or less to
+          disable activation-range throttling for loaded entities in that category,
+          causing them to tick normally regardless of player distance.
       animals:
         vanilla: "0"
         default: "32"
@@ -369,9 +370,8 @@ world-settings:
         default: "16"
         description: >-
           The entity activation range for miscellaneous entities, including
-          dropped items. Dropped items outside this range may tick less frequently,
-          which can cause items moving through water streams to appear to lag,
-          rubber-band, or move backward.
+          dropped items. Outside of this range, items moving through water
+          streams may appear to visually lag, rubber-band, or move backward.
       water:
         vanilla: "0"
         default: "16"