[PATCH] docs: fix api-trace2 doc for "too_many_files" event

In 87db61a (trace2: write discard message to sentinel files,
2019-10-04), we added a new "too_many_files" event for when trace2
logging would create too many files in an output directory.
Unfortunately, the api-trace2 doc described a "discard" event instead.
Fix the doc to use the correct event name.

Signed-off-by: Josh Steadmon <redacted>
---
 Documentation/technical/api-trace2.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/technical/api-trace2.txt b/Documentation/technical/api-trace2.txt
index 3f52f981a2..037a91cbca 100644
--- a/Documentation/technical/api-trace2.txt
+++ b/Documentation/technical/api-trace2.txt

@@ -396,14 +396,14 @@ only present on the "start" and "atexit" events.
 }
 ------------
 
-`"discard"`::
+`"too_many_files"`::
 	This event is written to the git-trace2-discard sentinel file if there
 	are too many files in the target trace directory (see the
 	trace2.maxFiles config option).
 +
 ------------
 {
-	"event":"discard",
+	"event":"too_many_files",
 	...
 }
 ------------

-- 
2.32.0.rc1.229.g3e70b5a671-goog