Fix caplog docstring: indentation caused errors during docs build

Author: nicoddemus

_pytest/logging.py

@@ -292,8 +292,7 @@ def caplog(request):
     * caplog.text()          -> string containing formatted log output
     * caplog.records()       -> list of logging.LogRecord instances
     * caplog.record_tuples() -> list of (logger_name, level, message) tuples
-    * caplog.clear()         -> clear captured records and formatted log output
-                                string
+    * caplog.clear()         -> clear captured records and formatted log output string
     """
     result = LogCaptureFixture(request.node)
     yield result