[PATCH 2/3] api-credentials.txt: mention credential.helper explicitly

[Matthieu Moy <Matthieu.Moy@imag.fr>]

The name of the configuration variable was mentioned only at the very
end of the explanation, in a place specific to a specific rule, hence it
was not very clear what the specification was about.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
 Documentation/technical/api-credentials.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/technical/api-credentials.txt b/Documentation/technical/api-credentials.txt
index 8804c42..4561469 100644
--- a/Documentation/technical/api-credentials.txt
+++ b/Documentation/technical/api-credentials.txt
@@ -179,7 +179,8 @@ credentials from and to long-term storage (where "long-term" is simply
 longer than a single git process; e.g., credentials may be stored
 in-memory for a few minutes, or indefinitely on disk).
 
-Each helper is specified by a single string. The string is transformed
+Each helper is specified by a single string in the configuration
+variable credential.helper. The string is transformed
 by git into a command to be executed using these rules:
 
   1. If the helper string begins with "!", it is considered a shell
-- 
1.7.11.rc0.57.g84a04c7