[zenity] Remove unsupported <td> parameters so yelp-check validates

[Andre Klapper <aklapper src gnome org>]

commit b011066c32acb8b8a6a1ece5970a17be2ee4681a
Author: Andre Klapper <a9016009 gmx de>
Date:   Mon Sep 25 17:55:17 2017 +0200

    Remove unsupported <td> parameters so yelp-check validates

 help/C/usage.page |   14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/help/C/usage.page b/help/C/usage.page
index 6aab600..96e9ea4 100644
--- a/help/C/usage.page
+++ b/help/C/usage.page
@@ -57,15 +57,15 @@
 
     <table frame="all" rules="all">
         <thead>
-          <tr valign="top">
-            <td colname="COLSPEC0">
+          <tr>
+            <td>
               <p>Exit Code</p></td>
-            <td colname="COLSPEC1">
+            <td>
               <p>Description</p></td>
           </tr>
         </thead>
         <tbody>
-          <tr valign="top">
+          <tr>
             <td>
               <p><var>0</var></p>
             </td>
@@ -73,7 +73,7 @@
               <p>The user has pressed either <gui style="button">OK</gui> or <gui 
style="button">Close</gui>.</p>
             </td>
           </tr>
-          <tr valign="top">
+          <tr>
             <td>
               <p><var>1</var></p>
             </td>
@@ -81,7 +81,7 @@
               <p>The user has either pressed <gui style="button">Cancel</gui>, or used the window functions 
to close the dialog.</p>
             </td>
           </tr>
-          <tr valign="top">
+          <tr>
             <td>
               <p><var>-1</var></p>
             </td>
@@ -89,7 +89,7 @@
               <p>An unexpected error has occurred.</p>
             </td>
           </tr>
-          <tr valign="top">
+          <tr>
             <td>
               <p><var>5</var></p>
             </td>