Update home page and asciinema poster

Also remove trailing whitespace in all files

content/posts/vim-stt/index.md

@@ -15,7 +15,7 @@ categories:
 Sometimes, fully automating a task is not worth the effort. So I end up running
 a set of commands usually from a cheat sheet text file slightly modifying the
 arguments each time. I used the below in vim to send line under cursor to vim's
-`:terminal` open in a split 
+`:terminal` open in a split
 ```vim
 :call term_list()[0]->term_sendkeys(getline('.') .. "\<CR>")
 ```
@@ -101,7 +101,7 @@ autocmd BufNewFile,BufRead cheat.sh nnoremap <buffer> <silent><2-LeftMouse> :Sen
 
 ### Demo
 
-{{< asciinema key="vimstt" >}}
+{{< asciinema key="vimstt" poster="npt:0:23" startAt="0:18" >}}
 
 ### Using