[css-fonts-4] [varfonts] Fix typo in font-weights table

Author: litherum

css-fonts-4/Overview.bs

@@ -192,7 +192,7 @@ at least as dark as its predecessor. Only values between 1 - 999 are valid, and
 	<tr><th>- 99</th><td>400</td><td>No change</td></tr>
 	<tr><th>100 - 349</th><td>400</td><td>100</td></tr>
 	<tr><th>350 - 549</th><td>700</td><td>100</td></tr>
-	<tr><th>550 - 745</th><td>900</td><td>400</td></tr>
+	<tr><th>550 - 749</th><td>900</td><td>400</td></tr>
 	<tr><th>750 - 899</th><td>900</td><td>700</td></tr>
 	<tr><th>900 -</th><td>No change</td><td>700</td></tr>
 	</tbody>