standardize and tidy tables

(cherry picked from commit 622d8cf)

Author: anita-flegg

create-credhub-vars.html.md.erb

@@ -158,9 +158,11 @@ The following table presents examples of the correct and incorrect way to refere
   <col width="50%">
   <col width="50%">
   <tr>
+  <thead>
     <th> Correct Format </th>
     <th> Incorrect Format </th>
   </tr>
+  </thead>
   <tr>
     <td>
      <pre>

get-credhub-vars.html.md.erb

@@ -47,6 +47,7 @@ HTTP/1.1 200 OK
   <th>Parameter</th>
   <th>Description</th>
   <tr>
+</thead>
     <td>product_guid</td>
     <td>The unique product identifier, formatted as a text string</td>
   </tr>
@@ -84,6 +85,7 @@ HTTP/1.1 200 OK
   <th>Parameter</th>
   <th>Description</th>
   <tr>
+</thead>
     <td>variable_name</td>
     <td>The name of the variable, formatted as a text string</td>
   </tr>

index.html.md.erb

@@ -27,7 +27,7 @@ When you package your software with Tile Generator, it generates these subdirect
     <th style="width: 20%">Directory</th>
     <th>Description</th>
   </tr>
-  </thead>
+</thead>
   <tr>
     <td><code>metadata</code></td>
     <td>Configure settings for your software in a YAML file.
@@ -113,7 +113,7 @@ operators and developers.
     <th>Audience</th>
     <th>Benefits</th>
   </tr>
-  </thead>
+</thead>
   <tr>
     <td>Operators</td>
     <td>

migrating-credhub-credentials.html.md.erb

@@ -17,7 +17,7 @@ corresponding CredHub credential types:
     <th>CredHub Credential Type</th>
     <th>Supported Tanzu Operations Manager Version</th>
   </tr>
-  </thead>
+</thead>
   <tr>
     <td><code>secret</code></td>
     <td><code>password</code></td>

property-template-references.html.md.erb

@@ -573,7 +573,7 @@ The following table lists the available install-time verifiers:
       Properties
     </th>
   </tr>
-  </thead>
+</thead>
   <tr>
     <td>
         <code>Verifiers::BlobstoreVerifier</code>

tile-errands.html.md.erb

@@ -42,7 +42,7 @@ To configure a co-located errand, define the following properties in the `pre_de
     <th>Property</th>
     <th>Description</th>
   </tr>
-  <thead>
+</thead>
   <tr>
     <td width="28%"><code>name: MY-ERRAND</code></td>
     <td>Provide the name of the errand job. The example manifest in the following section uses

tile-reference/property-blueprints/_vm-type-dropdown.html.erb

@@ -40,7 +40,6 @@ This holds single string value selected from allowed vm_types.
     <td>value</td>
     <td>Returns a string which is the name of the selected VM type.</td>
   </tr>
-
   <tr>
     <td>value_present?</td>
     <td>Returns true if value is a non-empty string.</td>

tile-upgrades.html.md.erb

@@ -128,7 +128,7 @@ Example:
         <th><strong>Value Structure</strong></th>
         <th><strong>Example</strong></th>
     </tr>
-    </thead>
+  </thead>
     <tr>
         <td><code>single-value properties</code></td>
         <td>Single value, but type-specific</td>