docs(README*.md): add action-oriented comments for docker pull

Author: KemingHe

README-dockerhub.md

@@ -9,9 +9,9 @@ Stop getting out-of-date Python package manager commands from your AI. Cross-ref
 **1. Pull Docker image**:
 
 ```shell
-# Pin to commit hash for production security (2025-07-22 release example)
-# See https://hub.docker.com/r/keminghe/py-dep-man-companion/tags
-docker pull keminghe/py-dep-man-companion@sha256:2c896dc617e8cd3b1a1956580322b0f0c80d5b6dfd09743d90859d2ef2b71ec6
+# Pin to commit hash for production security
+# Get current hash from: https://hub.docker.com/r/keminghe/py-dep-man-companion/tags
+docker pull keminghe/py-dep-man-companion@sha256:2c896dc617e8cd3b1a1956580322b0f0c80d5b6dfd09743d90859d2ef2b71ec6  # 2025-07-22 release example
 
 # Or use latest for development
 docker pull keminghe/py-dep-man-companion:latest

README.md

@@ -9,9 +9,9 @@ Stop getting out-of-date Python package manager commands from your AI. Cross-ref
 **1. Pull Docker image**:
 
 ```shell
-# Pin to commit hash for production security (2025-07-22 release example)
-# See https://hub.docker.com/r/keminghe/py-dep-man-companion/tags
-docker pull keminghe/py-dep-man-companion@sha256:2c896dc617e8cd3b1a1956580322b0f0c80d5b6dfd09743d90859d2ef2b71ec6
+# Pin to commit hash for production security
+# Get current hash from: https://hub.docker.com/r/keminghe/py-dep-man-companion/tags
+docker pull keminghe/py-dep-man-companion@sha256:2c896dc617e8cd3b1a1956580322b0f0c80d5b6dfd09743d90859d2ef2b71ec6  # 2025-07-22 release example
 
 # Or use latest for development
 docker pull keminghe/py-dep-man-companion:latest