Fix incorrect information in TextBox component docs

Change-Id: Id2920f96f1752d622a0f8a105e2869a8e958114d

appinventor/components/src/com/google/appinventor/components/runtime/TextBox.java

@@ -219,14 +219,14 @@ public final class TextBox extends TextBoxBase {
 
   @SimpleProperty(
     category = PropertyCategory.BEHAVIOR,
-    description = "Whether the %type% is read-only. By default, this is true."
+    description = "Whether the %type% is read-only. By default, this is false."
   )
   public boolean ReadOnly() {
     return readOnly;
   }
 
   /**
-   * Whether the %type% is read-only. By default, this is `true`{:.logic.block}.
+   * Whether the %type% is read-only. By default, this is `false`{:.logic.block}.
    * @param readOnly
    */
   @DesignerProperty(

appinventor/docs/html/reference/components/userinterface.html

@@ -1339,7 +1339,7 @@ having dark grey components.</li>
  if </code>NumbersOnly<code class="highlighter-rouge"> is true, you can set the text to anything at all using the
  [</code>Text`](#TextBox.Text) property.</dd>
   <dt id="TextBox.ReadOnly" class="boolean"><em>ReadOnly</em></dt>
-  <dd>Whether the TextBox is read-only. By default, this is <code class="logic block highlighter-rouge">true</code>.</dd>
+  <dd>Whether the TextBox is read-only. By default, this is <code class="logic block highlighter-rouge">false</code>.</dd>
   <dt id="TextBox.Text" class="text"><em>Text</em></dt>
   <dd>The text in the <code class="highlighter-rouge">TextBox</code>, which can be set by the programmer in the Designer or Blocks Editor,
  or it can be entered by the user (unless the <a href="#TextBox.Enabled"><code class="highlighter-rouge">Enabled</code></a> property is false).</dd>

appinventor/docs/markdown/reference/components/userinterface.md

@@ -1511,7 +1511,7 @@ Users enter text in a text box component.
  [`Text`](#TextBox.Text) property.
 
 {:id="TextBox.ReadOnly" .boolean} *ReadOnly*
-: Whether the TextBox is read-only. By default, this is `true`{:.logic.block}.
+: Whether the TextBox is read-only. By default, this is `false`{:.logic.block}.
 
 {:id="TextBox.Text" .text} *Text*
 : The text in the `TextBox`, which can be set by the programmer in the Designer or Blocks Editor,