[lldb][docs] Expand CSS fix for LLDB doc tables

Apparently the sphinx version on the server doesn't place <p> tags in the
table cells, so the previous fix from commit 7fce3b240b
didn't fix the bug for that sphinx version. Just expand the CSS workaround
to all <td> tags.

lldb/docs/_static/lldb.css

@@ -47,7 +47,7 @@ table.mapping td.content {
 /* Workaround for a Safari bug that would otherwise make table cells less wide
 than the containing text. This just sets it back to the default browser
 property.*/
-td p {
+td {
   -webkit-hyphens: manual !important;
 }