Docs(QBreadcrumbsEl): remove un-used 'ripple' prop

[KareemDa]

What kind of change does this PR introduce?

• Bugfix
• Feature
• Documentation
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes
• No

The PR fulfills these requirements:

• It's submitted to the dev branch (or v[X] branch)
• When resolving a specific issue, it's referenced in the PR's title (e.g. fix: #xxx[,#xxx], where "xxx" is the issue number)
• It's been tested on a Cordova (iOS, Android) app
• It's been tested on an Electron app
• Any necessary documentation has been added or updated in the docs or explained in the PR's description.

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to start a new feature discussion first and wait for approval before working on it)

Other information:

[MilosPaunovic]

@KareemDa Hmm... I'm thinking out loud now... Do we want to remove the reference to Ripple here, or do we, potentially, want to implement it properly...?

Let's wait for someone else to weigh in on this.

[rstoenescu]

Ripple can be attached in devland, so no point in adding a prop for it.
Thanks for contributing!