LibJS: Add missing spec links

Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp

@@ -300,7 +300,7 @@ double constrain_to_range(double x, double minimum, double maximum)
     return min(max(x, minimum), maximum);
 }
 
-// 13.32 RoundNumberToIncrement ( x, increment, roundingMode )
+// 13.32 RoundNumberToIncrement ( x, increment, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundnumbertoincrement
 BigInt* round_number_to_increment(GlobalObject& global_object, BigInt const& x, u64 increment, String const& rounding_mode)
 {
     auto& heap = global_object.heap();

Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp

@@ -59,7 +59,7 @@ bool is_builtin_calendar(String const& identifier)
     return true;
 }
 
-// 12.1.3 GetBuiltinCalendar ( id )
+// 12.1.3 GetBuiltinCalendar ( id ), https://tc39.es/proposal-temporal/#sec-temporal-getbuiltincalendar
 Calendar* get_builtin_calendar(GlobalObject& global_object, String const& identifier)
 {
     auto& vm = global_object.vm();

Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp

@@ -137,7 +137,7 @@ TemporalDuration to_temporal_duration_record(GlobalObject& global_object, Object
     return result;
 }
 
-// 7.5.3 DurationSign ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
+// 7.5.3 DurationSign ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds ), https://tc39.es/proposal-temporal/#sec-temporal-durationsign
 i8 duration_sign(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds)
 {
     // 1. For each value v of « years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds », do
@@ -155,7 +155,7 @@ i8 duration_sign(double years, double months, double weeks, double days, double
     return 0;
 }
 
-// 7.5.4 IsValidDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
+// 7.5.4 IsValidDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds ), https://tc39.es/proposal-temporal/#sec-temporal-isvalidduration
 bool is_valid_duration(double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds)
 {
     // 1. Let sign be ! DurationSign(years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds).

Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp

@@ -145,7 +145,7 @@ BigInt* parse_temporal_instant(GlobalObject& global_object, String const& iso_st
     return js_bigint(vm, utc->big_integer().minus(Crypto::SignedBigInteger::create_from(offset_nanoseconds)));
 }
 
-// 8.5.5 CompareEpochNanoseconds ( epochNanosecondsOne, epochNanosecondsTwo )
+// 8.5.5 CompareEpochNanoseconds ( epochNanosecondsOne, epochNanosecondsTwo ), https://tc39.es/proposal-temporal/#sec-temporal-compareepochnanoseconds
 i32 compare_epoch_nanoseconds(BigInt const& epoch_nanoseconds_one, BigInt const& epoch_nanoseconds_two)
 {
     // 1. If epochNanosecondsOne > epochNanosecondsTwo, return 1.

Userland/Libraries/LibJS/Runtime/Temporal/Now.cpp

@@ -226,7 +226,7 @@ PlainDateTime* system_date_time(GlobalObject& global_object, Value temporal_time
     return builtin_time_zone_get_plain_date_time_for(global_object, time_zone, *instant, *calendar);
 }
 
-// 2.3.5 SystemZonedDateTime ( temporalTimeZoneLike, calendarLike )
+// 2.3.5 SystemZonedDateTime ( temporalTimeZoneLike, calendarLike ), https://tc39.es/proposal-temporal/#sec-temporal-systemzoneddatetime
 ZonedDateTime* system_zoned_date_time(GlobalObject& global_object, Value temporal_time_zone_like, Value calendar_like)
 {
     auto& vm = global_object.vm();

Userland/Libraries/LibJS/Runtime/Temporal/PlainTimePrototype.cpp

@@ -147,7 +147,7 @@ JS_DEFINE_NATIVE_FUNCTION(PlainTimePrototype::nanosecond_getter)
     return Value(temporal_time->iso_nanosecond());
 }
 
-// 4.3.17 Temporal.PlainTime.prototype.toPlainDateTime ( temporalDate )
+// 4.3.17 Temporal.PlainTime.prototype.toPlainDateTime ( temporalDate ), https://tc39.es/proposal-temporal/#sec-temporal.plaintime.prototype.toplaindatetime
 JS_DEFINE_NATIVE_FUNCTION(PlainTimePrototype::to_plain_date_time)
 {
     // 1. Let temporalTime be the this value.

Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp

@@ -415,7 +415,7 @@ double get_offset_nanoseconds_for(GlobalObject& global_object, Value time_zone,
     return offset_nanoseconds;
 }
 
-// 11.6.12 BuiltinTimeZoneGetOffsetStringFor ( timeZone, instant )
+// 11.6.12 BuiltinTimeZoneGetOffsetStringFor ( timeZone, instant ), https://tc39.es/proposal-temporal/#sec-temporal-builtintimezonegetoffsetstringfor
 Optional<String> builtin_time_zone_get_offset_string_for(GlobalObject& global_object, Object& time_zone, Instant& instant)
 {
     auto& vm = global_object.vm();

Userland/Libraries/LibJS/Runtime/Temporal/TimeZoneConstructor.cpp

@@ -82,7 +82,7 @@ Value TimeZoneConstructor::construct(FunctionObject& new_target)
     return create_temporal_time_zone(global_object, canonical, &new_target);
 }
 
-// 11.3.2 Temporal.TimeZone.from ( item )
+// 11.3.2 Temporal.TimeZone.from ( item ), https://tc39.es/proposal-temporal/#sec-temporal.timezone.from
 JS_DEFINE_NATIVE_FUNCTION(TimeZoneConstructor::from)
 {
     auto item = vm.argument(0);