Apply suggestions from code review

Co-authored-by: Pawel Winogrodzki <pawelwi@microsoft.com>

Author: dmcilvaney

.github/copilot-instructions.md

@@ -65,7 +65,7 @@ Run all commands from the repo root (where `azldev.toml` lives). If the terminal
 | Add a component | `azldev comp add` |
 | Build a component | `azldev comp build -p <name> -q` |
 | Build chain (auto-publish to local repo) | `azldev comp build --local-repo-with-publish ./base/out -p <a> -p <b> -q` |
-| Render many specs for check-in | `azldev comp render -a` |
+| Render all specs for check-in | `azldev comp render -a` |
 | Render a single component | `azldev comp render -p <name>` |
 | Prepare sources (apply overlays) | `azldev comp prep-sources -p <name> --force -o <dir> -q` |
 | Prepare sources (skip overlays) | `azldev comp prep-sources -p <name> --skip-overlays --force -o <dir> -q` |

.github/workflows/scripts/check_rendered_specs.py

@@ -52,7 +52,7 @@ def _git_bytes(*args: str) -> bytes:
 
 
 def _git_lines_z(*args: str) -> list[str]:
-    """Run a git command with -z-compatible args and return NUL-split lines."""
+    """Run a git command with -z-compatible args and return NULL-split lines."""
     out = _git_bytes(*args)
     return [p.decode("utf-8") for p in out.split(b"\x00") if p]