Updating IsControl Char page (#3165)

* extraneous T was deleted from Remarks section

* deleted Remarks section at top because under each IsControl example has a Remarks section already

* per Ron's suggestion, adding back in the Remarks section at the top. And deleting the two below the examples

Author: IndigoShock

xml/System/Char.xml

@@ -1067,10 +1067,10 @@ When a managed <xref:System.Char> type, which is represented as a Unicode UTF-16
         <summary>Indicates whether a specified Unicode character is categorized as a control character.</summary>
         <remarks>
           <format type="text/markdown"><![CDATA[  
-  
-## Remarks  
+   
+## Remarks
  Control characters are formatting and other non-printing characters, such as ACK, BEL, CR, FF, LF, and VT. The Unicode standard assigns code points from \U0000 to \U001F, \U007F, and from \U0080 to \U009F to control characters. According to the Unicode standard, these values are to be interpreted as control characters unless their use is otherwise defined by an application. Valid control characters are members of the <xref:System.Globalization.UnicodeCategory.Control?displayProperty=nameWithType> category.  
-  
+        
  ]]></format>
         </remarks>
       </Docs>
@@ -1116,11 +1116,7 @@ When a managed <xref:System.Char> type, which is represented as a Unicode UTF-16
         <returns>
           <see langword="true" /> if <paramref name="c" /> is a control character; otherwise, <see langword="false" />.</returns>
         <remarks>
-          <format type="text/markdown"><![CDATA[  
-  
-## Remarks  
- Control characters are formatting and other non-printing characters, such as ACK, BEL, CR, FF, LF, and VT. T The Unicode standard assigns code points from \U0000 to \U001F, \U007F, and from \U0080 to \U009F to control characters. According to the Unicode standard, these values are to be interpreted as control characters unless their use is otherwise defined by an application. Valid control characters are members of the <xref:System.Globalization.UnicodeCategory.Control?displayProperty=nameWithType> category.  
-  
+          <format type="text/markdown"><![CDATA[   
    
   
 ## Examples  
@@ -1182,13 +1178,7 @@ When a managed <xref:System.Char> type, which is represented as a Unicode UTF-16
         <returns>
           <see langword="true" /> if the character at position <paramref name="index" /> in <paramref name="s" /> is a control character; otherwise, <see langword="false" />.</returns>
         <remarks>
-          <format type="text/markdown"><![CDATA[  
-  
-## Remarks  
- Character positions in a string are indexed starting from zero.  
-  
- Control characters are formatting and other non-printing characters, such as ACK, BEL, CR, FF, LF, and VT. The Unicode standard assigns code points from \U0000 to \U001F, \U007F, and from \U0080 to \U009F to control characters. According to the Unicode standard, these values are to be interpreted as control characters unless their use is otherwise defined by an application. Valid control characters are members of the <xref:System.Globalization.UnicodeCategory.Control?displayProperty=nameWithType> category.  
-  
+          <format type="text/markdown"><![CDATA[    
    
   
 ## Examples