fix(docs-infra): put the license references in a separate paragraph in the footer (#40944)
fix(docs-infra): put the license references in a separate paragraph in the footer (#40944)

This commit improves how sentences are broken up into lines in the
footer (due to the limited max-width of the content) by moving the
license references in a separate paragraph.

Before: ![footer before][1]
After: ![footer after][2]

[1]: https://user-images.githubusercontent.com/8604205/108595211-593ed000-7387-11eb-8ee5-f13c8bf522f4.png
[2]: https://user-images.githubusercontent.com/8604205/108595214-5a6ffd00-7387-11eb-9a9d-dbaa2175f51f.png

PR Close #40944

gkalpak/angular,manekinekko/angular,mgechev/angular,brandonroberts/angular,manekinekko/angular,ocombe/angular,brandonroberts/angular,alxhub/angular,JiaLiPassion/angular,JiaLiPassion/angular,angular-indonesia/angular,gkalpak/angular,manekinekko/angular,ocombe/angular,gkalpak/angular,gnomeontherun/angular,mgechev/angular,alxhub/angular,brandonroberts/angular,mgechev/angular,ocombe/angular,angular-indonesia/angular,JiaLiPassion/angular,brandonroberts/angular,angular-indonesia/angular,angular-indonesia/angular,gnomeontherun/angular,manekinekko/angular,ocombe/angular,shairez/angular,ocombe/angular,mgechev/angular,shairez/angular,alxhub/angular,brandonroberts/angular,angular/angular,gkalpak/angular,gnomeontherun/angular,JiaLiPassion/angular,angular/angular,angular/angular,manekinekko/angular,alxhub/angular,shairez/angular,brandonroberts/angular,alxhub/angular,angular/angular,shairez/angular,manekinekko/angular,ocombe/angular,gnomeontherun/angular,shairez/angular,mgechev/angular