correct JSON in case_study.html

[smrgeoinfo]

Minor issue-- JSON example for "Individual Focused Annotation" is not valid JSON. I can't see how the JSON gets in the HTML, but here's a fixed version of the JSON:

{"data": {
    "nodes": [
        {
            "id": 24629,
            "labels": ["annotation"],
            "properties": {
                "uid": "9052324",
                "created": "2017-11-24 09:45:18-0800"
            }
        },
        {
            "id": 24630,
            "labels": ["creator"],
            "properties": {
                "lastName": "Goring",
                "firstName": "Simon",
                "id": "0000-0002-2700-4605",
                "PropertyID": "orcid"
            }
        },
        {
            "id": 24631,
            "labels": ["object"],
            "properties": {
                "type": "TextualBody",
                "value": "Two samples counted at the same depth (x=94cm) with the same ages. It seems like these samples are two separate counts at the same depth and may be summed during analysis."
            }
        },
        {
            "id": 24632,
            "labels": ["object"],
            "properties": {
                "type": "URL",
                "value": "http://api.neotomadb.org/v1/data/datasets/13047"
            }
        },
        {
            "id": 24633,
            "labels": [
                "object",
                "resource"
            ],
            "properties": {
                "type": "DOI",
                "value": "10.17616/R3PD38"
            }
        }
    ],
    "relationships": [
        {
            "id": 12324,
            "labels": ["created"],
            "relates": [
                24630,
                24629
            ],
            "origin": 24630
        },
        {
            "id": 12324,
            "labels": ["hasBody"],
            "relates": [
                24629,
                24631
            ],
            "origin": 24629
        },
        {
            "id": 12324,
            "labels": ["hasTarget"],
            "relates": [
                24629,
                24632
            ],
            "origin": 24629
        },
        {
            "id": 12324,
            "labels": ["hasResource"],
            "relates": [
                24632,
                24633
            ],
            "origin": 24632
        }
    ]
}}