Fix resamp2_crcf_example.c.

[argilo]

Fixes #109.

I've changed the second resamp2_crcf_interp_execute to resamp2_crcf_decim_execute and multiplied the output samples by 0.5 like in resamp2_crcf_decim_example:

liquid-dsp/examples/resamp2_crcf_decim_example.c

Line 103 in b5d9a8a

fprintf(fid,"y(%3u) = %12.8f + j*%12.8f;\n", i+1, 0.5f*crealf(y[i ]), 0.5f*cimagf(y[i ]));