Merge branch 'khan-mansoor-adaptive-concurrency-limiting-alt-text' into 'master'

Update alt text of adative concurrency limit graph

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/170900



Merged-by: Evan Read <eread@gitlab.com>
Approved-by: Justin Tobler <jtobler@gitlab.com>
Approved-by: Evan Read <eread@gitlab.com>
Reviewed-by: Justin Tobler <jtobler@gitlab.com>
Co-authored-by: Mansoor Khan <thisismansoorkhan@gmail.com>
Co-authored-by: Mansoor Khan <mansoor@incubyte.co>

doc/administration/gitaly/concurrency_limiting.md

@@ -154,7 +154,7 @@ algorithm. Each adaptive limit:
 
 This mechanism provides some headroom for the machine to "breathe" and speeds up current inflight requests.
 
-![Gitaly Adaptive Concurrency Limit](img/gitaly_adaptive_concurrency_limit_v16_6.png)
+![Graph showing a Gitaly adaptive concurrency limit being adjusted based on the system resource usage by following the AIMD algorithm](img/gitaly_adaptive_concurrency_limit_v16_6.png)
 
 The adaptive limiter calibrates the limits every 30 seconds and: