Presentations page: Improve formatting
Presentations page: Improve formatting

Do not use fixed font code block for explaining text.

Bug: Issue 13332
Signed-off-by: Edwin Kempin <d43fb6c98c97e553b671ed9a9318100f1de386e7@google.com>
Change-Id: I4990b32fdae02d8be4196e4ce5dbb90b7f9ecaf5

GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage