an apparent typo for the environment variable was included with 81567caf87
("trace2: update docs to describe system/global config settings",
2019-04-15), and was missed when renamed variables by e4b75d6a1d
("trace2: rename environment variables to GIT_TRACE2*", 2019-05-19)

Signed-off-by: Carlo Marcelo Arenas Belón <redacted>
---
  Documentation/technical/api-trace2.txt | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/technical/api-trace2.txt b/Documentation/technical/api-trace2.txt
index 23c3cc7a37..f7ffe7d599 100644
--- a/Documentation/technical/api-trace2.txt
+++ b/Documentation/technical/api-trace2.txt

@@ -35,7 +35,7 @@ Format details are given in a later section.
  === The Normal Format Target
  
  The normal format target is a tradition printf format and similar
-to GIT_TRACE format.  This format is enabled with the `GIT_TR`
+to GIT_TRACE format.  This format is enabled with the `GIT_TRACE2`
  environment variable or the `trace2.normalTarget` system or global
  config setting.