docs: Clarify availability of analytics
docs: Clarify availability of analytics

This commit tweaks the language in Analytics.md to make it clear
that summaries of install/error data are publicly available,
while only Homebrew maintainers can access the full analytics
(as specified above in the document).

ilovezfs/brew,EricFromCanada/brew,MikeMcQuaid/brew,pseudocody/brew,pseudocody/brew,palxex/brew,konqui/brew,JCount/brew,hanxue/linuxbrew,mahori/brew,mgrimes/brew,MikeMcQuaid/brew,palxex/brew,JCount/brew,gregory-nisbet/brew,EricFromCanada/brew,ilovezfs/brew,jmsundar/brew,mahori/brew,nandub/brew,alyssais/brew,jmsundar/brew,mgrimes/brew,sjackman/homebrew,reitermarkus/brew,nandub/brew,maxim-belkin/brew,konqui/brew,EricFromCanada/brew,reitermarkus/brew,EricFromCanada/brew,konqui/brew,reelsense/brew,mahori/brew,amar-laksh/brew_sudo,DomT4/brew,reelsense/brew,vitorgalvao/brew,sjackman/homebrew,alyssais/brew,gregory-nisbet/brew,vitorgalvao/brew,Linuxbrew/brew,aw1621107/brew,nandub/brew,DomT4/brew,claui/brew,Linuxbrew/brew,vitorgalvao/brew,DomT4/brew,gregory-nisbet/brew,mahori/brew,konqui/brew,MikeMcQuaid/brew,reelsense/brew,Linuxbrew/brew,vitorgalvao/brew,Homebrew/brew,sjackman/homebrew,claui/brew,palxex/brew,sjackman/homebrew,MikeMcQuaid/brew,amar-laksh/brew_sudo,Homebrew/brew,pseudocody/brew,JCount/brew,reitermarkus/brew,aw1621107/brew,jmsundar/brew,reitermarkus/brew,Homebrew/brew,hanxue/linuxbrew,nandub/brew,maxim-belkin/brew,Linuxbrew/brew,claui/brew,aw1621107/brew,Homebrew/brew,JCount/brew,maxim-belkin/brew,DomT4/brew,amar-laksh/brew_sudo,hanxue/linuxbrew,ilovezfs/brew,alyssais/brew,mgrimes/brew,claui/brew