doxygen BUGFIX source file headers, file attribute
diff --git a/src/plugins_exts/metadata.c b/src/plugins_exts/metadata.c
index 726ecb9..ed7bc5b 100644
--- a/src/plugins_exts/metadata.c
+++ b/src/plugins_exts/metadata.c
@@ -1,5 +1,5 @@
/**
- * @file plugins_exts_nacm.c
+ * @file metadata.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief libyang extension plugin - Metadata (RFC 7952)
*
diff --git a/src/plugins_exts/metadata.h b/src/plugins_exts/metadata.h
index 0b0683d..56d5cb6 100644
--- a/src/plugins_exts/metadata.h
+++ b/src/plugins_exts/metadata.h
@@ -1,5 +1,5 @@
/**
- * @file plugins_exts_metadata.h
+ * @file metadata.h
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief ietf-yang-metadata API
*
diff --git a/src/plugins_exts/nacm.c b/src/plugins_exts/nacm.c
index f80d145..2381db1 100644
--- a/src/plugins_exts/nacm.c
+++ b/src/plugins_exts/nacm.c
@@ -1,5 +1,5 @@
/**
- * @file plugins_exts_nacm.c
+ * @file nacm.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief libyang extension plugin - NACM (RFC 6536)
*
diff --git a/src/plugins_exts/yangdata.c b/src/plugins_exts/yangdata.c
index 2f1390d..945e706 100644
--- a/src/plugins_exts/yangdata.c
+++ b/src/plugins_exts/yangdata.c
@@ -1,5 +1,5 @@
/**
- * @file plugins_exts_yangdata.c
+ * @file yangdata.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief libyang extension plugin - yang-data (RFC 8040)
*