fix semconv dependencies comment (#582)

* fix semconv dependencies comment

* fix path in comment to update script

Author: SylvainJuge

gradle/libs.versions.toml

@@ -9,17 +9,17 @@ autoservice = "1.1.1"
 opentelemetryProto = "1.3.2-alpha"
 
 # otel agent, we rely on the '*-alpha' and get the non-alpha dependencies transitively
-# updated from upstream agent with .ci/update-upstream.sh
+# updated from upstream agent with gradle/update-upstream.sh
 opentelemetryJavaagentAlpha = "2.14.0-alpha"
 
 # otel contrib
-# updated from upstream agent with .ci/update-upstream.sh
+# updated from upstream agent with gradle/update-upstream.sh
 opentelemetryContribAlpha = "1.44.0-alpha"
 
 # otel semconv
-# updated from upstream agent with .ci/update-upstream.sh
-# While the semconv stable artifact is provided transitively by the agent, we still have to explicitly
-# reference the "incubating" version explicitly
+# updated from upstream agent with gradle/update-upstream.sh
+# While the semconv stable/incubating artifacts are provided as transitive dependencies, keeping
+# an explicit version here allows to easily override to a not-yet-released version.
 opentelemetrySemconv = "1.30.0"
 opentelemetrySemconvAlpha = "1.30.0-alpha"