Apply suggestions from code review

Co-authored-by: kvid <kvid@users.noreply.github.com>

docs/README.md

@@ -137,7 +137,7 @@ mywire.tsv        BOM (bill of materials) as tab-separated text file
 mywire.html       HTML page with wiring diagram and BOM embedded
 ```
 
-Wildcars in the file path are also supported to process multiple files at once, e.g.:
+Wildcards in the file path are also supported to process multiple files at once, e.g.:
 ```
 $ wireviz ~/path/to/files/*.yml
 ```

src/wireviz/wv_cli.py

@@ -31,7 +31,11 @@ epilog = (
 )
 
 
-@click.command(epilog=epilog, no_args_is_help=True)
+@click.command(
+    epilog=epilog,
+    no_args_is_help=True,
+    context_settings=dict(help_option_names=["-h", "--help"]),
+)
 @click.argument("file", nargs=-1)
 @click.option(
     "-f",

src/wireviz/wv_dataclasses.py

@@ -22,8 +22,8 @@ from wireviz.wv_colors import (
 )
 from wireviz.wv_utils import (
     NumberAndUnit,
-    awg_equiv,
     aspect_ratio,
+    awg_equiv,
     mm2_equiv,
     parse_number_and_unit,
     remove_links,