fix(standards): fix table text color specificity in dark theme

Add explicit color to td elements and scope table styles to
.td-content to override Bootstrap/Docsy defaults that made
table text too dark to read.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: matthew-on-git

assets/scss/_styles_project.scss

@@ -135,6 +135,7 @@ blockquote {
 }
 
 // --- Tables ---
+.td-content table,
 table {
   color: #c8d6e5;
 
@@ -145,6 +146,7 @@ table {
   }
 
   td {
+    color: #c8d6e5;
     border-color: rgba(200, 214, 229, 0.1);
   }