Add H3 to fix validation flag

Author: v-andreaco

memdocs/configmgr/mdt/user-driven-installation-developers-guide.md

@@ -3973,7 +3973,7 @@ Table 84 provides information about the [DLLs](#DLLs) element.
 ##### Element Attributes  
  Table 86 lists the attributes of the [Error](#Error) element and provides a description of each.  
 
-###  
+### Table 86. Error Element Information 
 
 | **Attribute** |                                                                                                                                                                                      **Description**                                                                                                                                                                                       |
 |---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|