Add link to Debugger Adapter Protocol node in documentation

I noticed that the interpreters node in the docs links to the DAP
protocol docs, but I thought the DAP node ought to as well.  This
patch adds a bit of introductory text there.

Approved-By: Eli Zaretskii <eliz@gnu.org>

diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index e4c00143fd1791c297d9cda350b0af35013649aa..15fa158a316dc5cce99f39c03ed984353ad46862 100644 (file)
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -39487,6 +39487,10 @@ depend on the language).
 @node Debugger Adapter Protocol
 @chapter Debugger Adapter Protocol
 
+The Debugger Adapter Protocol is a generic API that is used by some
+IDEs to communicate with debuggers.  It is documented at
+@url{https://microsoft.github.io/debug-adapter-protocol/}.
+
 Generally, @value{GDBN} implements the Debugger Adapter Protocol as
 written.  However, in some cases, extensions are either needed or even
 expected.