cont : fix comment [no ci]

Author: ggerganov

src/llama-kv-cache.h

@@ -17,8 +17,8 @@ struct llama_ubatch;
 struct llama_kv_cache : public llama_memory_i {
     using llama_memory_i::llama_memory_i;
 
-    virtual void restore() = 0; // call if batch processing fails to restore the cache state
-    virtual void commit() = 0;  // call after successful batch processing
+    virtual void restore() = 0; // call if batch processing fails - restores the cache state
+    virtual void commit() = 0;  // call after successful batch processing - clears any pending state
 
     virtual int32_t  get_n_tokens()   const = 0;
     virtual uint32_t get_used_cells() const = 0; // TODO: remove, this is too-specific to the unified cache