docs: use appropriate data type in string interpolation

PR-URL: #7631
Reviewed-by: Athan Reines <[email protected]>

Author: ShabiShett07

lib/node_modules/@stdlib/blas/base/dsyr/README.md

@@ -299,15 +299,15 @@ int main( void ) {
 
     // Print the result:
     for ( int i = 0; i < N*N; i++ ) {
-        printf( "A1[ %i ] = %f\n", i, A1[ i ] );
+        printf( "A1[ %i ] = %lf\n", i, A1[ i ] );
     }
 
     // Perform the symmetric rank 1 operation `A = α*x*x^T + A` using alternative indexing semantics:
     c_dsyr_ndarray( CblasUpper, N, 1.0, x, 1, 0, A2, N, 1, 0 );
 
     // Print the result:
     for ( int i = 0; i < N*N; i++ ) {
-        printf( "A2[ %i ] = %f\n", i, A[ i ] );
+        printf( "A2[ %i ] = %lf\n", i, A[ i ] );
     }
 }
 ```

lib/node_modules/@stdlib/blas/base/dsyr/examples/c/example.c

@@ -45,14 +45,14 @@ int main( void ) {
 
 	// Print the result:
 	for ( int i = 0; i < N*N; i++ ) {
-		printf( "A1[ %i ] = %f\n", i, A1[ i ] );
+		printf( "A1[ %i ] = %lf\n", i, A1[ i ] );
 	}
 
 	// Perform the symmetric rank 1 operation `A = α*x*x^T + A` using alternative indexing semantics:
 	c_dsyr_ndarray( CblasUpper, N, 1.0, x, 1, 0, A2, N, 1, 0 );
 
 	// Print the result:
 	for ( int i = 0; i < N*N; i++ ) {
-		printf( "A2[ %i ] = %f\n", i, A2[ i ] );
+		printf( "A2[ %i ] = %lf\n", i, A2[ i ] );
 	}
 }