Make --version output valid YAML for parsing #2856

This commit adds a colon so the --version output goes from

ScanCode version 30.1.0
ScanCode Output Format version 2.0.0
SPDX License list version 3.15

to

ScanCode version: 30.1.0
ScanCode Output Format version: 2.0.0
SPDX License list version: 3.15

This will make the output easier to parse since it is valid YAML now.

Signed-off-by: Kevin Ji <kyji1011@gmail.com>

Author: kji22

src/scancode/cli.py

@@ -93,9 +93,9 @@ def print_examples(ctx, param, value):
 def print_version(ctx, param, value):
     if not value or ctx.resilient_parsing:
         return
-    click.echo('ScanCode version ' + scancode_config.__version__)
-    click.echo('ScanCode Output Format version ' + scancode_config.__output_format_version__)
-    click.echo('SPDX License list version ' + scancode_config.spdx_license_list_version)
+    click.echo('ScanCode version: ' + scancode_config.__version__)
+    click.echo('ScanCode Output Format version: ' + scancode_config.__output_format_version__)
+    click.echo('SPDX License list version: ' + scancode_config.spdx_license_list_version)
     ctx.exit()