Fix links

Bug: webrtc:11335
Change-Id: I3cd8da6eada2d343bffd6bbdc62962a994606232
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168187
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30452}
diff --git a/docs/native-code/index.md b/docs/native-code/index.md
index 5900538..ab49088 100644
--- a/docs/native-code/index.md
+++ b/docs/native-code/index.md
@@ -33,10 +33,10 @@
 * [Development][webrtc-development]
 * [Android][webtc-android-development]
 * [iOS][webrtc-ios-development]
-* [Experimental RTP header extensions][rtp_hdrext]
+* [Experimental RTP header extensions][rtp-hdrext]
 
 [webrtc-prerequitite-sw]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/development/prerequisite-sw/index.md
 [webrtc-development]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/development/index.md
 [webtc-android-development]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/android/index.md
 [webrtc-ios-development]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/ios/index.md
-[rtp_hdrext]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/rtp_hdrext/index.md
+[rtp-hdrext]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/rtp-hdrext/index.md
diff --git a/docs/native-code/rtp-hdrext/index.md b/docs/native-code/rtp-hdrext/index.md
index 2e15ba6..f9aa9ac 100644
--- a/docs/native-code/rtp-hdrext/index.md
+++ b/docs/native-code/rtp-hdrext/index.md
@@ -1,10 +1,10 @@
 The following subpages define experiemental RTP header extensions:
 
-  * [abs-send-time](abs-send-time)
-  * [abs-capture-time](abs-capture-time)
-  * [color-space](color-space)
-  * [playout-delay](playout-delay)
-  * [transport-wide-cc-02](transport-wide-cc-02)
-  * [video-content-type](video-content-type)
-  * [video-timing](video-timing)
-  * [inband-cn](inband-cn)
+  * [abs-send-time](abs-send-time/index.md)
+  * [abs-capture-time](abs-capture-time/index.md)
+  * [color-space](color-space/index.md)
+  * [playout-delay](playout-delay/index.md)
+  * [transport-wide-cc-02](transport-wide-cc-02/index.md)
+  * [video-content-type](video-content-type/index.md)
+  * [video-timing](video-timing/index.md)
+  * [inband-cn](inband-cn/index.md)