Allow more than 2 weeks for elections

In the 2024.2 election cycle, the polling period
was three weeks. We noticed a small uptick in
the voting numbers:

- 2025.1: (21.4% voter) Voting period was three weeks
284 authorized voters, votes cast: 61
- 2024.2 (19.1% voter) Voting period was two weeks
298 authorized voters, votes cast: 57
- 2024.1: (16.5% voter) Voting period was two weeks
309 authorized voters, Actual votes cast: 51

While the reason for this uptick cannot solely be
attributed to the change in window, the TC expressed
their preference that the extended voting period
did not hurt. It is allowed for this voting
period to overlap with the week set aside for
TC campaigning - any early voters have the ability
to change their minds and their votes before
polling ends.

Change-Id: I45e12ce715708eb67449dc73db8cffcf3cc70234

reference/charter.rst

@@ -125,10 +125,10 @@ Election for PTL seats
 
 PTL seats are completely renewed every development cycle. A separate election
 is run for each project team. The election nomination as well as the voting
-period should be open for fourteen days (2 weeks for each phase). These
-elections are collectively held (from the nomination start date until the
-voting end date) no later than 2 weeks prior to each cycle final release
-date (on or before 'R-2' week)
+period should be open for at least fourteen days (2 or more weeks for each
+phase). These elections are collectively held (from the nomination start
+date until the voting end date) no later than 2 weeks prior to each cycle
+final release date (on or before 'R-2' week)
 
 If a PTL seat is vacated before the end of the cycle for which the individual
 was elected or after the election (means leaderless project), the TC will
@@ -169,10 +169,10 @@ Members are elected for a term that expires at the conclusion of the second
 scheduled election after the start of their term or after 14 months, whichever
 is shorter. For this election we'll use a multiple-winner election system
 see below). The election nomination as well as the voting period should be
-open for fourteen days (2 weeks for each phase). The election is held
-(from the nomination start date until the voting end date) no earlier than
-8 weeks and no later than 2 weeks prior to each cycle final release date
-(between 'R-8' and 'R-2' week).
+open for at least fourteen days (2 or more weeks for each phase). The election
+is held (from the nomination start date until the voting end date) no
+earlier than 8 weeks and no later than 2 weeks prior to each cycle final
+release date (between 'R-8' and 'R-2' week).
 
 If required, TC and PTL elections can be held as combined election.