Apply suggestions from code review

Co-authored-by: Philip Chimento <[email protected]>

Author: sffc

spec/abstractops.html

@@ -580,7 +580,7 @@ <h1>
       ValidateTemporalUnitValue (
         _value_: a Temporal unit, ~unset~, or ~auto~,
         _unitGroup_: ~date~, ~time~, or ~datetime~,
-        optional _extraValues_: a List of either Temporal units or ~auto~,
+        optional _extraValues_: a List of either Temporal units or ~auto~ or ~unset~,
       ): either a normal completion containing ~unused~ or a throw completion
     </h1>
     <dl class="header">
@@ -589,10 +589,10 @@ <h1>
     </dl>
     <emu-alg>
       1. If _extraValues_ is present and _extraValues_ contains _value_, return ~unused~.
-      1. Let _category_ be the value in the “Category” column of the row of <emu-xref href="#table-temporal-units"></emu-xref> whose “Value” column contains _value_. If there is no such row, throw a RangeError exception.
+      1. Let _category_ be the value in the “Category” column of the row of <emu-xref href="#table-temporal-units"></emu-xref> whose “Value” column contains _value_. If there is no such row, throw a *RangeError* exception.
       1. If _category_ is ~date~ and _unitGroup_ is ~date~ or ~datetime~, return ~unused~.
       1. If _category_ is ~time~ and _unitGroup_ is ~time~ or ~datetime~, return ~unused~.
-      1. Throw a RangeError exception.
+      1. Throw a *RangeError* exception.
     </emu-alg>
   </emu-clause>