[2853] Fix Doxygen and Python documentation

src/lib/datasrc/memory/zone_writer.h

@@ -91,7 +91,7 @@ public:
     ///     later.
     /// \throw isc::InvalidOperation if called second time.
     /// \throw DataSourceError load related error (not thrown if constructed
-    /// with catch_load_error being false).
+    /// with catch_load_error being \c true).
     ///
     /// \param error_msg If non NULL, used as a placeholder to store load error
     /// messages.

src/lib/python/isc/datasrc/zonewriter_inc.cc

@@ -53,7 +53,7 @@ returned. In all other cases, None is returned.\n\
 Exceptions:\n\
   isc.InvalidOperation if called second time.\n\
   DataSourceError load related error (not thrown if constructed with\n\
-             catch_load_error being False).\n\
+             catch_load_error being True).\n\
 \n\
 ";