[gdb/testsuite] Fix typo in configure.ac

Fix a typo in gdb/testsuite/configure.ac, and regenerate
gdb/testsuite/configure.

Approved-By: Tom Tromey <tom@tromey.com>

gdb/testsuite/configure

diff --git a/gdb/testsuite/configure b/gdb/testsuite/configure
index c8be80b..6ea9686 100755
--- a/gdb/testsuite/configure
+++ b/gdb/testsuite/configure
@@ -1326,7 +1326,7 @@
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-gtk            enable gdbtk graphical user interface (GUI)
   --enable-libctf         Handle .ctf type-info sections [default=yes]
-  --enable-shared         build shared libraries deault=yes
+  --enable-shared         build shared libraries default=yes
 
 Some influential environment variables:
   CC          C compiler command

gdb/testsuite/configure.ac

diff --git a/gdb/testsuite/configure.ac b/gdb/testsuite/configure.ac
index 575b1d2..6eae196 100644
--- a/gdb/testsuite/configure.ac
+++ b/gdb/testsuite/configure.ac
@@ -49,7 +49,7 @@
 
 # Enable shared libraries.
 AC_ARG_ENABLE(shared,
-[  --enable-shared         build shared libraries [deault=yes]],,
+[  --enable-shared         build shared libraries [default=yes]],,
   enable_shared=yes)
 
 # If we have shared libraries, try to set RPATH_ENVVAR reasonably,