referencing "docket entries" as a type of judicial records to which the presumption of access applies).  The Fourth Circuit has squarely acknowledged the public's presumptive right of access under the First Amendment to docket entries.  The ability of the public and press to inspect docket sheets is a critical component to providing meaningful access to [judicial] proceedings. The docket sheet provides onlookers an overview of the court proceedings and allows them to ascertain the parties to the case, the materials that have been filed, and the trial judge's decisions. Access to docket sheets therefore enhances the appearance of fairness and enlightens the public both to the procedures the district court utilized to adjudicate the claims before it and to the materials it relied upon in reaching its determinations. In this respect, docket sheets provide a kind of index to judicial proceedings and documents, and endow the public and press with the capacity to exercise their rights guaranteed by the First Amendment.  