Installation instructions for .eslintrc should escape backslashes

[psytrx]

Change Type

Correction

Proposed Changes

Copy-pasting the .eslintrc from the docs leads to parsing errors via eslint/js-yaml.

YAMLException: Cannot read config file: ./src/lib/components/ui/.eslintrc
Error: unknown escape sequence (7:33)

 4 |       "warn",
 5 |       {
 6 |         "argsIgnorePattern": "^_",
 7 |         "varsIgnorePattern": "^\$\$(Props|Events|Slots|Generic)$"
-------------------------------------^
 8 |       }
 9 |     ]

They seem to be escaped in the markdown sources already. The straightforward solution would be double-escaping them here, but I didn't yet verify if that works.