runtime(doc): fix inconsistent indent (#14089)

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/doc/if_ole.txt

@@ -39,9 +39,9 @@ instance), code similar to the following should be used:
 	$vim = new Win32::OLE 'Vim.Application';
 
 [C#] >
-        // Add a reference to Vim in your project.
-        // Choose the COM tab.
-        // Select "Vim Ole Interface 1.1 Type Library"
+	// Add a reference to Vim in your project.
+	// Choose the COM tab.
+	// Select "Vim Ole Interface 1.1 Type Library"
 	Vim.Vim vimobj = new Vim.Vim();
 
 Vim does not support acting as a "hidden" OLE server, like some other OLE