doc: fix wording of GODEBUG history item from CL 606055

Change-Id: Ia53d4a58810948d83a3e87e08239602da1bad815
Reviewed-on: https://go-review.googlesource.com/c/go/+/609935
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Commit-Queue: Ian Lance Taylor <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
Auto-Submit: Cherry Mui <[email protected]>

Author: tpaschalis

doc/godebug.md

@@ -153,7 +153,7 @@ and the [go command documentation](/cmd/go#hdr-Build_and_test_caching).
 ### Go 1.24
 
 Go 1.24 changed the global [`math/rand.Seed`](/pkg/math/rand/#Seed) to be a
-no-op. This setting is controlled by the `randseednop` setting.
+no-op. This behavior is controlled by the `randseednop` setting.
 For Go 1.24 it defaults to `randseednop=1`.
 Using `randseednop=0` reverts to the pre-Go 1.24 behavior.