Minor fixes in generate_enums.py

[gavv]

Here is what I had to edit by hand in roc-go after running the script on latest master:

diff --git a/roc/clock_sync_backend.go b/roc/clock_sync_backend.go
index 00f14f8..ec648f8 100644
--- a/roc/clock_sync_backend.go
+++ b/roc/clock_sync_backend.go
@@ -33,8 +33,8 @@ const (
        //
        // Cons:
        //  - synchronizes only clock speed, but not position; different receivers will
-       // have different (constant) delays
+       //    have different (constant) delays
        //  - affected by network jitter; spikes in packet delivery will cause slow
-       // oscillations in clock speed
+       //    oscillations in clock speed
        ClockSyncBackendNiq ClockSyncBackend = 2
 )

diff --git a/roc/protocol.go b/roc/protocol.go
index cf5fa08..e9c24d1 100644
--- a/roc/protocol.go
+++ b/roc/protocol.go
@@ -32,7 +32,7 @@ const (
        // Audio encodings:
        //  - PacketEncodingAvpL16Mono
        //  - PacketEncodingAvpL16Stereo
-       //  - encodings registered using ContextRegisterEncoding()
+       //  - encodings registered using Context.RegisterEncoding()
        //
        // FEC encodings:
        //  - none