gguf-py : fix missing comma after bad merge in tensor-mapping (ggml-org#21558)

This commit adds a missing comma in the vision encoder attention qkv
block.

The motivation for this change is that without the comma there will be
a string concatenation of the Kimi-K2.5 and the Nemotron Nano v2 VL
tensor mappings which will be broken.

Author: danbev

gguf-py/gguf/tensor_mapping.py

@@ -1441,7 +1441,7 @@ class TensorNameMap:
             "visual.blocks.{bid}.attn.qkv", # qwen3vl
             "model.vision.transformer.layers.{bid}.attention.query_key_value", # cogvlm
             "model.vision_model.transformer.layers.{bid}.self_attn.qkv_proj", # Deepseek-OCR CLIP
-            "vision_tower.encoder.blocks.{bid}.wqkv" # Kimi-K2.5
+            "vision_tower.encoder.blocks.{bid}.wqkv", # Kimi-K2.5
             "vision_model.radio_model.model.blocks.{bid}.attn.qkv", # Nemotron Nano v2 VL
         ),