fix: add --enable-kvbm doc to build.sh help (#2530)

Signed-off-by: Harrison King Saturley-Hall <hsaturleyhal@nvidia.com>

container/build.sh

@@ -363,9 +363,9 @@ show_image_options() {
 
 show_help() {
     echo "usage: build.sh"
-    echo "  [--base base image]"
+    echo "  [--base-image base image]"
     echo "  [--base-image-tag base image tag]"
-    echo "  [--platform platform for docker build"
+    echo "  [--platform platform for docker build]"
     echo "  [--framework framework one of ${!FRAMEWORKS[*]}]"
     echo "  [--tensorrtllm-pip-wheel-dir path to tensorrtllm pip wheel directory]"
     echo "  [--tensorrtllm-commit tensorrtllm commit to use for building the trtllm wheel if the wheel is not provided]"
@@ -382,6 +382,7 @@ show_help() {
     echo "  [--build-context name=path to add build context]"
     echo "  [--release-build perform a release build]"
     echo "  [--make-efa Enables EFA support for NIXL]"
+    echo "  [--enable-kvbm Enables KVBM support in Python 3.12]"
     echo "  [--trtllm-use-nixl-kvcache-experimental Enables NIXL KVCACHE experimental support for TensorRT-LLM]"
     exit 0
 }