Small fixes

Author: MaggotHATE

examples/main/README.md

@@ -252,7 +252,7 @@ By removing top tokens XTC can improve the variety of answers, break writing cli
 
 Being experimental and unique, XTC is disabled by default. The recommended combination of samplers is Min-P followed by XTC on its default settings: `--sampling-seq mx --min-p 0.02 --xtc-probability 0.5`.
 
-Example usage: `--xtc-probability 0.5 --xtc-threshold 0.1
+Example usage: `--xtc-probability 0.5 --xtc-threshold 0.1`
 
 ### Logit Bias
 

src/llama-sampling.cpp

@@ -1102,7 +1102,7 @@ static void llama_sample_xtc_apply(struct llama_sampler * smpl, llama_token_data
 
     if (cur_p->size - pos_last >= ctx->min_keep && pos_last > 0) {
         cur_p->data += pos_last;
-        cur_p->size = cur_p->size - pos_last;
+        cur_p->size -= pos_last;
     }
 }