fix relative link in docker readme (#11144)

relative links don't work when it's on dockerhub.

2 files changed, 3 insertions, 1 deletions

diff --git a/changelog.d/11144.misc b/changelog.d/11144.misc
new file mode 100644

index 0000000000..b5db109e2b
--- /dev/null
+++ b/changelog.d/11144.misc
@@ -0,0 +1 @@
+Fix broken link in the docker image README.
diff --git a/docker/README.md b/docker/README.md

index edf917bb11..38d182bf45 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -226,4 +226,5 @@ healthcheck:
 ## Using jemalloc
 
 Jemalloc is embedded in the image and will be used instead of the default allocator.
-You can read about jemalloc by reading the Synapse [README](../README.rst).
+You can read about jemalloc by reading the Synapse 
+[README](https://github.com/matrix-org/synapse/blob/HEAD/README.rst#help-synapse-is-slow-and-eats-all-my-ram-cpu).