sarvam_moe: fix n_embd_head_v/k to use function call syntax

Author: sumitchatterjee13

src/models/sarvam-moe.cpp

@@ -2,10 +2,10 @@
 
 llm_build_sarvam_moe::llm_build_sarvam_moe(const llama_model & model, const llm_graph_params & params) :
     llm_graph_context(params) {
-    const int64_t n_embd_head = hparams.n_embd_head_v;
+    const int64_t n_embd_head = hparams.n_embd_head_v();
     const int64_t n_embd_gqa  = hparams.n_embd_v_gqa();
 
-    GGML_ASSERT(n_embd_head == hparams.n_embd_head_k);
+    GGML_ASSERT(n_embd_head == hparams.n_embd_head_k());
 
     ggml_tensor * cur;
     ggml_tensor * inpL;