fix: /pulsar/distribution/server/target/classpath.txt: No such file or directory caurse pulsar cli build fail (#13554)

Signed-off-by: LiLi <urfree@apache.org>
diff --git a/site2/tools/docker-build-site.sh b/site2/tools/docker-build-site.sh
index 8be87e5..a9a790b 100755
--- a/site2/tools/docker-build-site.sh
+++ b/site2/tools/docker-build-site.sh
@@ -44,4 +44,4 @@
 
 DOCKER_CMD="docker run -i -e CI_USER=$CI_USER -e CI_GROUP=$CI_GROUP -v $HOME/.m2:/root/.m2 -e CROWDIN_DOCUSAURUS_PROJECT_ID=${CROWDIN_DOCUSAURUS_PROJECT_ID} -e CROWDIN_DOCUSAURUS_API_KEY=${CROWDIN_DOCUSAURUS_API_KEY} -v $ROOT_DIR:/pulsar $IMAGE"
 
-$DOCKER_CMD bash -l -c 'cd /pulsar && rm -f distribution/server/target/classpath.txt && /pulsar/site2/tools/build-site.sh'
+$DOCKER_CMD bash -l -c 'cd /pulsar && /pulsar/site2/tools/build-site.sh'