update markdown files
updated .md files with improved use of header styles
diff --git a/samples/adexchangebuyer/README.md b/samples/adexchangebuyer/README.md
index 8a1f149..a1a546d 100644
--- a/samples/adexchangebuyer/README.md
+++ b/samples/adexchangebuyer/README.md
@@ -1,5 +1,5 @@
-Where are the samples?
-=======================================================
+# Where are the samples?
+
The DoubleClick Ad Exchange Buyer REST API samples are now hosted separately
from the client library project. You can find them
-[here.](https://github.com/googleads/googleads-adxbuyer-examples/tree/master/python)
+[here](https://github.com/googleads/googleads-adxbuyer-examples/tree/master/python).
diff --git a/samples/dfareporting/README.md b/samples/dfareporting/README.md
index 5e21e25..6dbc5b4 100644
--- a/samples/dfareporting/README.md
+++ b/samples/dfareporting/README.md
@@ -1,5 +1,5 @@
-Where are the samples?
-=======================================================
+# Where are the samples?
+
The DoubleClick for Advertisers Reporting API samples are now hosted separately
from the client library project. You can find them
-[here.](https://github.com/googleads/googleads-dfa-reporting-samples)
+[here](https://github.com/googleads/googleads-dfa-reporting-samples).