Fix shellcheck (should also resurrect Tidy)
Fix shellcheck (should also resurrect Tidy)

 ### Problem
 GitHub workflow names need to have an initial capital letter, apparently,
 or need to differ from the list of jobs inside. Without the initial capital letter,
 the workflow is ignored or actions parsing halts, not sure which.

 ### Changes
 * capitalize shellcheck's "name:"
 * remove unnecessary repo token argument (copy pasta)

project-chip/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip,nestlabs/connectedhomeip,project-chip/connectedhomeip