Fix broken RST hyperlink in report-transaction docstrings

The link text backtick was closed early and the closing `_ was missing, so
the report-a-transaction URL rendered as plain text. Pre-existing; fixed here
while validating links.

Part of STF-557.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: oschwald

src/minfraud/webservice.py

@@ -388,9 +388,9 @@ async def report(
         """Send a transaction report to the Report Transaction endpoint.
 
         :param report: A dictionary containing the transaction report to be sent
-          to the Report Transations web service as specified in the `REST API`
+          to the Report Transations web service as specified in the `REST API
           documentation
-          <https://dev.maxmind.com/minfraud/report-a-transaction/?lang=en>_.
+          <https://dev.maxmind.com/minfraud/report-a-transaction/?lang=en>`_.
         :type report: dict
         :param validate: If set to false, validation of the report dictionary
           will be disabled. This validation helps ensure that your request is
@@ -652,9 +652,9 @@ def report(
         """Send a transaction report to the Report Transaction endpoint.
 
         :param report: A dictionary containing the transaction report to be sent
-          to the Report Transations web service as specified in the `REST API`
+          to the Report Transations web service as specified in the `REST API
           documentation
-          <https://dev.maxmind.com/minfraud/report-a-transaction/?lang=en>_.
+          <https://dev.maxmind.com/minfraud/report-a-transaction/?lang=en>`_.
         :type report: dict
         :param validate: If set to false, validation of the report dictionary
           will be disabled. This validation helps ensure that your request is