[CI]Fixed the spell check function in typos.toml (#6753)

### What this PR does / why we need it?
The incorrect regular expression syntax `.*[UE4M3|ue4m3].*` actually
ignores all words containing any of the following characters: `u, e, 4,
m, 3, |`

```yaml
extend-ignore-identifiers-re = [".*Unc.*", ".*_thw",
    ".*UE8M0.*", ".*[UE4M3|ue4m3].*", ".*eles.*", ".*fo.*", ".*ba.*",
    ".*ot.*", ".*[Tt]h[rR].*"]
```
===fix===>
```yaml
extend-ignore-identifiers-re = [".*Unc.*", ".*_thw",
    ".*UE8M0.*", ".*(UE4M3|ue4m3]).*", ".*eles.*", ".*fo.*", ".*ba.*",
    ".*ot.*", ".*[Tt]h[rR].*"]
```

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.15.0
- vLLM main:
9562912cea

Signed-off-by: MrZ20 <2609716663@qq.com>

examples/eplb/eplb_strategy.py

@@ -59,7 +59,7 @@ def calculate_average(lst):
     return total / count
 
 
-def layer_imblance_polt(y_list, label_names, device_num, output_path, file_name):
+def layer_imbalance_plot(y_list, label_names, device_num, output_path, file_name):
     plt.rcParams["font.sans-serif"] = ["Arial"]
     plt.rcParams["axes.unicode_minus"] = False
     x = [i for i in range(58)]
@@ -160,4 +160,4 @@ if __name__ == "__main__":
     save_matrix_to_json(output_path, file_name, np.array(global_deployment))
     label_names = ["default deployment max load", "balanced load max load", "balanced load avg load"]
     new_file_name = f"{exp_name}_{num_devices}_{num_redundancy_expert}.png"
-    layer_imblance_polt(y_list, label_names, num_devices, output_path, new_file_name)
+    layer_imbalance_plot(y_list, label_names, num_devices, output_path, new_file_name)