style(pdf): aggressively elongate parallel symbol

app/Services/ExamPdfExportService.php

@@ -1889,11 +1889,11 @@ class ExamPdfExportService
             .'.katex .mrel .mord{font-family:inherit !important;}'
             .'.katex .mrel.katex-rel-parallel{'
             .'display:inline-block;'
-            .'font-size:1.14em;'
-            .'line-height:1.2;'
-            .'letter-spacing:.05em;'
-            .'vertical-align:-.01em;'
-            .'transform:skewX(-15deg) scaleY(1.26);'
+            .'font-size:1.22em;'
+            .'line-height:1.28;'
+            .'letter-spacing:.04em;'
+            .'vertical-align:0;'
+            .'transform:skewX(-14deg) scaleY(1.42);'
             .'transform-origin:center;'
             .'}'
             .'</style>';