Update runtime files
diff --git a/runtime/doc/channel.txt b/runtime/doc/channel.txt
index 5b4ea2b..fbe4d3f 100644
--- a/runtime/doc/channel.txt
+++ b/runtime/doc/channel.txt
@@ -465,7 +465,7 @@
To read all normal output from a RAW channel that is available: >
let output = ch_readraw(channel)
-To read all error output from a RAW channel that is available:: >
+To read all error output from a RAW channel that is available: >
let output = ch_readraw(channel, {"part": "err"})
Note that if the channel is in NL mode, ch_readraw() will only return one line
for each call.