fix grep statements for version tags

r-ver/3.1.0/hooks/post_push

r-ver/3.2.0/hooks/post_push

r-ver/3.3.0/hooks/post_push

r-ver/3.3.1/hooks/post_push

r-ver/3.3.2/hooks/post_push

r-ver/3.3.3/hooks/post_push

r-ver/3.4.0/hooks/post_push

r-ver/3.4.1/hooks/post_push

r-ver/Makefile

r-ver/post_push

rstudio/3.3.1/hooks/post_push

rstudio/3.3.2/hooks/post_push

rstudio/3.3.3/hooks/post_push

rstudio/3.4.0/hooks/post_push

rstudio/3.4.1/hooks/post_push

rstudio/Makefile

rstudio/post_push

tidyverse/3.3.1/hooks/post_push

tidyverse/3.3.2/hooks/post_push

tidyverse/3.3.3/hooks/post_push