[LTP] [PATCH v4 5/5] Adopt doc for TST_RETRY_FUNC for LTP_TIMEOUT_MUL

[Clemens Famulla-Conrad]

Mention that time limit is mulitplied with LTP_TIMEOUT_MUL.
---
 doc/test-writing-guidelines.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt
index efff4d40c..905a4baa5 100644
--- a/doc/test-writing-guidelines.txt
+++ b/doc/test-writing-guidelines.txt
@@ -2313,7 +2313,8 @@ Retry a function in limited time
 Sometimes LTP test needs retrying a function for many times to get success.
 This achievement makes that possible via keeping it retrying if the return
 value of the function is NOT as we expected. After exceeding a limited time,
-test will break from the retries immediately.
+test will break from the retries immediately. The time limit is multiplied
+with LTP_TIMEOUT_MUL.
 
 [source,c]
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-- 
2.16.4