message: tfdbg: add missing -f flag of the pt command to the command table
diff: @@ -141,6 +141,7 @@ Try the following commands at the `tfdbg>` prompt (referencing the code at
  | **`lt`** | | **List dumped tensors.** | `lt` |
  | | `-n <name_pattern>` | List dumped tensors with names matching given regular-expression pattern. | `lt -n Softmax.*` |
  | | `-t <op_pattern>` | List dumped tensors with op types matching given regular-expression pattern. | `lt -t MatMul` |
  +| | `-f <filter_name>` | List only the tensors that pass a registered tensor filter. | `lt -f has_inf_or_nan` |
  | | `-s <sort_key>` | Sort the output by given `sort_key`, whose possible values are `timestamp` (default), `dump_size`, `op_type` and `tensor_name`. | `lt -s dump_size` |
  | | `-r` | Sort in reverse order. | `lt -r -s dump_size` |
  | **`pt`** | | **Print value of a dumped tensor.** | |
  