[css-color-4] fix inline issue syntax

Author: svgeesus

css-color-4/Overview.bs

@@ -2083,7 +2083,7 @@ Examples of HSL colors</h3>
 	In each table, the X axis represents the saturation
 	while the Y axis represents the lightness.
 
-	Issue(3088):
+	Issue(#3088):
 
 	<div class="note">The conversions in the table below are known to contain errors. They are copied from CSS Color 3, which also had the same errors. Those colors were supposedly computed by a program in ABC. A future spec will correctly compute those colors. Meanwhile, please note that these conversions are non-normative examples.</div>
 
@@ -4438,7 +4438,7 @@ Interpolation</h2>
 <h3 id="interpolation-space">
 Color space for interpolation</h3>
 
-	Issue(5928):
+	Issue(#5928):
 
 	Colors are first converted to Lab
 	and then interpolated as Lab colors.
@@ -4512,7 +4512,7 @@ Interpolating with alpha</h3>
 		when premultiplication is undone.
 	</div>
 
-	Issue(445):
+	Issue(#445):
 
 <h3 id="hue-interpolation">
 Hue interpolation</h3>
@@ -4577,10 +4577,10 @@ Hue interpolation</h3>
 	then for interpolation, NaN is replaced
 	by the value 0 for both angles.
 
-	Issue(4928):
+	Issue(#4928):
 
 
-	Issue(5277):
+	Issue(#5277):
 
 
 <h2 id="sample">