update comment

Author: rithikanarayan

Dockerfile

@@ -73,7 +73,8 @@ RUN find ./python/lib/$runtime/site-packages/ddtrace -name \*.h -delete
 RUN find ./python/lib/$runtime/site-packages/ddtrace -name \*.hpp -delete
 RUN find ./python/lib/$runtime/site-packages/ddtrace -name \*.pyx -delete
 
-# Strip debug symbols using strip -g for all .so files in ddtrace. This is to
+# Strip debug symbols and symbols that are not needed for relocation
+# processing  using strip --strip-unneeded for all .so files. This is to
 # reduce the size when ddtrace is built from sources. The release wheels are
 # already stripped of debug symbols. We should revisit this when serverless
 # benchmark uses pre-built wheels instead of building from sources.