Fix source typo

Found via `codespell -q 3 -L amin,als,ba,dum,mone,nd,nto,orign -S Changelog.txt,./lapack*`

common_thread.h

@@ -196,7 +196,7 @@ int syrk_thread(int mode, blas_arg_t *, BLASLONG *, BLASLONG *, int (*function)(
 
 int beta_thread(int mode, BLASLONG m, BLASLONG n,
 		double alpha_r, double alpha_i,
-		void *c, BLASLONG ldc, int (*fuction)());
+		void *c, BLASLONG ldc, int (*function)());
 
 int getrf_thread(int mode, BLASLONG m, BLASLONG n, BLASLONG k,
 		 void *offsetA, BLASLONG lda,