LibEDID: Fix DetailedTiming::pixel_clock_khz result

The stored value is in units of 10 kHz, which means that to get the
value in kHz, we need to multiply it by 10 and not 10000.

Userland/Libraries/LibEDID/EDID.cpp

@@ -665,7 +665,9 @@ Optional<FixedPoint<16>> Parser::gamma() const
 
 u32 Parser::DetailedTiming::pixel_clock_khz() const
 {
-    return (u32)m_edid.read_le(&m_detailed_timings.pixel_clock) * 10000;
+    // Note: The stored value is in units of 10 kHz, which means that to get the
+    // value in kHz, we need to multiply it by 10.
+    return (u32)m_edid.read_le(&m_detailed_timings.pixel_clock) * 10;
 }
 
 u16 Parser::DetailedTiming::horizontal_addressable_pixels() const
@@ -768,7 +770,8 @@ FixedPoint<16, u32> Parser::DetailedTiming::refresh_rate() const
     if (total_pixels == 0)
         return {};
     // Use a bigger fixed point representation due to the large numbers involved and then downcast
-    return FixedPoint<32, u64>(pixel_clock_khz()) / total_pixels;
+    // Note: We need to convert the pixel clock from kHz to Hertz to actually calculate this correctly.
+    return FixedPoint<32, u64>(pixel_clock_khz() * 1000) / total_pixels;
 }
 
 ErrorOr<IterationDecision> Parser::for_each_established_timing(Function<IterationDecision(EstablishedTiming const&)> callback) const