update md

Author: jellizaveta

docs/rules/no-invalid-cosmetic-separator.md

@@ -30,6 +30,16 @@ The following code
 
 should not be reported
 
+### `remove: true` with extended CSS injection separator
+
+The following code
+
+```adblock
+#?$#a[href^="/bnlink/?bnid="] { remove: true; }
+```
+
+should not be reported
+
 ## Incorrect examples
 
 Examples of incorrect code:

docs/rules/no-invalid-css-declaration.md

@@ -24,7 +24,11 @@ The following code
 #$?#body { remove: true; }
 ```
 
-should not be reported
+should be reported as:
+
+```shell
+2:11 Unknown property `remove`
+```
 
 ## Incorrect examples