[lldb] Correct typo in memory read error

[teemperor]

LGTM (You can just land these straightforward patches directly without waiting for review, the dev policy allows that)

[DavidSpickett]

Thanks, I'll do that in future.

[teemperor]

Thanks! (and thanks for the patch)

lldb/source/Commands/CommandObjectMemory.cpp

if (argc == 2) {
       if (end_addr == LLDB_INVALID_ADDRESS) {
         result.AppendError("invalid end address expression.");
         result.AppendError(error.AsCString());
         result.SetStatus(eReturnStatusFailed);
         return false;
       } else if (end_addr <= addr) {
         result.AppendErrorWithFormat(
             "end address (0x%" PRIx64
-            ") must be greater that the start address (0x%" PRIx64 ").\n",
+            ") must be greater than the start address (0x%" PRIx64 ").\n",
             end_addr, addr);
         result.SetStatus(eReturnStatusFailed);
         return false;
       } else if (m_format_options.GetCountValue().OptionWasSet()) {
         result.AppendErrorWithFormat(
             "specify either the end address (0x%" PRIx64
             ") or the count (--count %" PRIu64 "), not both.\n",
             end_addr, (uint64_t)item_count);