fix(acs): capitalize and punctuate 'no argument specified' reconcile prompt

[MaxHorstmann]

Description

The prompt shown when az aks update is called with no arguments has two formatting issues:

Current:

no argument specified to update would you like to reconcile to current settings? (y/N):

Expected:

No argument specified to update. Would you like to reconcile to current settings? (y/N):

Issues:

1. Sentence does not start with a capital letter (no → No)
2. Missing period after update to separate the two sentences
3. would should be capitalized to Would (starts a new sentence)

Location

src/azure-cli/azure/cli/command_modules/acs/managed_cluster_decorator.py, line 8384

reconcilePrompt = 'no argument specified to update would you like to reconcile to current settings?'

[yonzhan]

Thank you for opening this issue, we will look into it.