Update line in README about url must have a schema

README.md

@@ -103,7 +103,7 @@ This is equivalent to the above:
 python3 main.py -a -c <category> <category2> -u <url> <url2>
 ```
 
-**OBS**: The url must have the ```https://``` part.<br/>
+**OBS**: The url must have a schema like: ```https://``` or ```http://```.<br/>
 **OBS**: If an error occures when adding a product, then the error might happen because the url has a ```&``` in it, when this happens then just put quotation marks around the url. This should solve the problem. If this doesn't solve the problem then summit a issue.<br/>
 
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