Update Matrixmul.md

Addressed the syntax issues and made proper indentation.
Update 11parallelAddVector.md

addressed syntax issues and formatted results.
Update 12rightrotate.md

Made proper indentation
Update 12rightrotate.md
Update 12rightrotate.md
Update 13isprimefn.md

math.h is not used anywhere, removing the same.
Update Taylor.md

Added Summary header
Update 12rightrotate.md
Update prime.md

Made proper indentation.
Update 15Revstring.md

Made proper indentation
Update Matchany.md

Made proper indentation
Created worlength program md,renamed 11th program
Added consolidated md file for C program
Modified MD File