Improve clarity of reCAPTCHA key placeholder

Updated the reCAPTCHA secret key placeholder to enhance clarity in documentation.

- Changed 'YOUR_SECRET_KEY' to '<YOUR_SECRET_KEY>' for better distinction in instructional text.

Release-Note: Update reCAPTCHA documentation for clearer key placeholder indication

Signed-off-by: IanSkelskey <ianskelskey@gmail.com>

docs/modules/admin/pages/recaptcha.adoc

@@ -85,7 +85,7 @@ INSERT INTO actor.org_unit_setting (org_unit, name, value) VALUES
 
 -- Insert reCAPTCHA secret key setting
 INSERT INTO actor.org_unit_setting (org_unit, name, value) VALUES
-(1, 'recaptcha.secret_key', '"YOUR_SECRET_KEY"');
+(1, 'recaptcha.secret_key', '"<YOUR_SECRET_KEY>"');
 
 -- Insert reCAPTCHA enabled setting
 INSERT INTO actor.org_unit_setting (org_unit, name, value) VALUES