[INTERNAL] Docs: Updated ESLint rules
[INTERNAL] Docs: Updated ESLint rules

- Desciption of rules were not consistent with actual content of
.eslintrc
- Added reference to eslintrc file instead of having a copy in the doc
file

fixes https://github.com/SAP/openui5/issues/333

Change-Id: Ib1effe78d1a0e9f096c9f99c0162279bf0df0586

SAP/openui5,SAP/openui5,nzamani/openui5,nzamani/openui5,olirogers/openui5,cschuff/openui5,cschuff/openui5,olirogers/openui5,cschuff/openui5,SAP/openui5,nzamani/openui5,SQCLabs/openui5,olirogers/openui5,SQCLabs/openui5,SAP/openui5,SQCLabs/openui5