Update schemas/browsers-schema.md

Co-authored-by: Queen Vinyl Da.i'gyu-Kazotetsu <vinyldarkscratch@gmail.com>

schemas/browsers-schema.md

diff --git a/schemas/browsers-schema.md b/schemas/browsers-schema.md
index 378a691..f843afa 100644
--- a/schemas/browsers-schema.md
+++ b/schemas/browsers-schema.md
@@ -47,7 +47,7 @@
 
 ### `accepts`
 
-An optional object indicating which additional features the browser supports. Possible properties are:
+An object indicating which additional features the browser supports. Possible properties are:
 
 - `flags` - if the browser supports flags.
 - `webextensions` - if the browser supports web extensions.