strace.md: Added option to start an executable (#979)
strace.md: Added option to start an executable (#979)

* updated strace.md with starting a program

* fixed errors, and followed same `` guide

* removed extraneous space

AgamAgarwal/tldr,zoisom/tldr,deekim/tldr,deekim/tldr,UncommonPleb/tldr,cptdeka10/tldr,zoisom/tldr,felixonmars/tldr,felixonmars/tldr,AgamAgarwal/tldr,cptdeka10/tldr,deekim/tldr,katekyan/tldr,zoisom/tldr,Phizho/tldr,slash3b/tldr,UncommonPleb/tldr,felixonmars/tldr,katekyan/tldr,Phizho/tldr,slash3b/tldr,Phizho/tldr,katekyan/tldr,cptdeka10/tldr,slash3b/tldr,UncommonPleb/tldr