Docs: fix some wrong words (GH-6987)


Fix typos in code comments: bdb.py and configure.ac.
(cherry picked from commit b5c246f833d95991fed728c3845176dd661cd5ea)

Co-authored-by: Eitan Adler <grimreaper@users.noreply.github.com>
diff --git a/configure.ac b/configure.ac
index 11fc7e5..bb89477 100644
--- a/configure.ac
+++ b/configure.ac
@@ -153,7 +153,7 @@
 [
 	case $enableval in
 	yes)
-		# Locate the best usable SDK, see Mac/README.txt for more
+		# Locate the best usable SDK, see Mac/README for more
 		# information
 		enableval="`/usr/bin/xcodebuild -version -sdk macosx Path 2>/dev/null`"
 		if ! ( echo $enableval | grep -E '\.sdk' 1>/dev/null )
@@ -609,7 +609,7 @@
 if test "$ac_sys_system" = "Darwin"
 then
 	# Compiler selection on MacOSX is more complicated than
-	# AC_PROG_CC can handle, see Mac/README.txt for more
+	# AC_PROG_CC can handle, see Mac/README for more
 	# information
 	if test -z "${CC}"
 	then