Add compat note to @lock (#52894)

JamesWrigley · web-flow · commit 8a69745bdcb0 · 2024-01-14T17:39:14.000+09:00
Fixes #52879. CC @IanButterworth
diff --git a/base/lock.jl b/base/lock.jl
@@ -260,6 +260,9 @@ end
 ```
 This is similar to using [`lock`](@ref) with a `do` block, but avoids creating a closure
 and thus can improve the performance.
+
+!!! compat
+    `@lock` was added in Julia 1.3, and exported in Julia 1.10.
 """
 macro lock(l, expr)
     quote
