Add Health API document to distribution package
diff --git a/Makefile.am b/Makefile.am
index 5f96975..e6639a7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -354,7 +354,7 @@
 		doc/service-api.txt doc/agent-api.txt doc/attribute-api.txt \
 		doc/serial-api.txt doc/network-api.txt \
 		doc/input-api.txt doc/audio-api.txt doc/control-api.txt \
-		doc/hfp-api.txt doc/assigned-numbers.txt
+		doc/hfp-api.txt doc/health-api.txt doc/assigned-numbers.txt
 
 AM_YFLAGS = -d