False Positive: Incorrect detection of amazon-sl license expression

### Description

While using ScanCode Toolkit to scan the file rntpc_react-native-splash-screen/README.md, the tool incorrectly identified lines 8-9 as matching the amazon-sl license expression. Upon manual review, this detection appears to be a false positive.

### How To Reproduce

Here is the project url https://gitee.com/openharmony-sig/rntpc_react-native-splash-screen.
Review the scan results. The following match is observed:
```json
"reference_matches": [
{
"license_expression": "amazon-sl",
"license_expression_spdx": "LicenseRef-.amazon.com.-AmznSL-1.0",
"from_file": "rntpc_react-native-splash-screen/README.md",
"start_line": 8,
"end_line": 9,
"matcher": "3-seq",
"score": 80.0,
"matched_length": 8,
"match_coverage": 80.0,
"rule_relevance": 100,
"rule_identifier": "amazon-sl_8.RULE",
"rule_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/rules/amazon-sl_8.RULE"
}
]
```