Update README.md with resources

Author: Making Programming Simple Lab

README.md

@@ -60,8 +60,8 @@ We gratefully acknowledge the contributions of these student developers -
 - [Intro to CGRAs](https://youtu.be/4h2Po78be-Q)
 - [A short demo of CCFv1.0](https://www.youtube.com/watch?v=iGV1lHsjy4w&t=1s)
 - [A manual on CCF implementation](https://github.com/MPSLab-ASU/ccf/blob/master/CCFv2.0_Manual.pdf)
-- [Tutorial](https://github.com/MPSLab-ASU/ccf/blob/main/CCFv2.0_Tutorial.pptx)
+- [Tutorial](https://github.com/MPSLab-ASU/ccf/blob/master/CCFv2.0_Tutorial.pptx)
 - [Paper](https://past.date-conference.com/system/files/file/date18/ubooth/121371.pdf)
-- [BibTex](https://github.com/MPSLab-ASU/ccf/blob/main/BibTex.bib)
+- [BibTex](https://github.com/MPSLab-ASU/ccf/blob/master/BibTex.bib)
 - [CGRA research @ MPSLab-ASU](https://labs.engineering.asu.edu/mps-lab/research/cgra/)
 - [CGRA research papers](https://labs.engineering.asu.edu/mps-lab/publications/?tsr=&tps_button=Search&yr=&type=&tgid=17&auth=)