Adapt function name with multiple coefs

headers/system.h

@@ -56,6 +56,6 @@ void gf_256_gaussian_elimination(uint8_t **A, uint8_t **b, uint32_t symbol_size,
  * @param nrs: number of repair symbols in a block
  * @return: a nss * nrs array of coefficients
  */
-uint8_t **gen_coef(uint32_t seed, uint32_t nss, uint32_t nrs);
+uint8_t **gen_coefs(uint32_t seed, uint32_t nss, uint32_t nrs);
 
 #endif /* SYSTEM_H */