docs: Writing tweaks to performance.md.
docs: Writing tweaks to performance.md.

andersk/zulip,hackerkid/zulip,andersk/zulip,punchagan/zulip,eeshangarg/zulip,hackerkid/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,andersk/zulip,punchagan/zulip,zulip/zulip,eeshangarg/zulip,zulip/zulip,rht/zulip,hackerkid/zulip,zulip/zulip,rht/zulip,punchagan/zulip,hackerkid/zulip,rht/zulip,kou/zulip,rht/zulip,hackerkid/zulip,eeshangarg/zulip,andersk/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,andersk/zulip,kou/zulip,kou/zulip,rht/zulip,andersk/zulip,rht/zulip,eeshangarg/zulip,hackerkid/zulip,zulip/zulip,eeshangarg/zulip,kou/zulip,punchagan/zulip,kou/zulip,hackerkid/zulip,punchagan/zulip,punchagan/zulip,zulip/zulip,punchagan/zulip,rht/zulip,kou/zulip