Tweak table wrapping

Update table wrapping CSS to prevent odd paragraph wrapping.

Fixes gh-41

Author: philwebb

src/main/css/asciidoctor.css

@@ -344,11 +344,16 @@
 
 .doc .tableblock pre,
 .doc .tableblock code,
-.doc .tableblock p,
 .doc .listingblock.wrap pre {
   white-space: pre-wrap;
 }
 
+.doc td:nth-child(1) .tableblock pre,
+.doc td:nth-child(1) .tableblock code,
+.doc td:nth-child(1) .listingblock.wrap pre {
+  white-space: nowrap;
+}
+
 /* Admonition blocks */
 
 .doc .admonitionblock {