Fix XML comment has badly formed XML & Unexpected character

[Yitzchok]

Here is a sample of the build warnings

ComplexZmanimCalendar.cs(2999,70): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetAlos16Point1Degrees() 16.1°' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(2999,95): warning CS1658: Unexpected character '1'. See also error CS1056. [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(2999,96): warning CS1658: Unexpected character '6'. See also error CS1056. [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(2999,98): warning CS1658: Unexpected character '1'. See also error CS1056. [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(2999,99): warning CS1570: XML comment has badly formed XML -- 'Reference to undefined entity 'deg'.' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3000,28): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetSunrise() sunrise' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3000,87): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetShaahZmanis16Point1Degrees() shaos zmaniyos' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3001,48): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetAlos16Point1Degrees() dawn' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3002,70): warning CS1570: XML comment has badly formed XML -- 'Reference to undefined entity 'deg'.' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3003,86): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetAlos16Point1Degrees() dawn' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3020,36): warning CS1570: XML comment has badly formed XML -- 'End tag 'em' does not match the start tag 'summary'.' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3020,51): warning CS1570: XML comment has badly formed XML -- 'End tag was not expected at this location.' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3036,70): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetAlos72() 72' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3036,82): warning CS1658: Unexpected character '7'. See also error CS1056. [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3036,83): warning CS1658: Unexpected character '2'. See also error CS1056. [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3036,118): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetSunrise() sunrise' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3037,47): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetShaahZmanisMGA() shaos zmaniyos' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3038,109): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetAlos72() dawn' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]
ComplexZmanimCalendar.cs(3039,54): warning CS1584: XML comment has syntactically incorrect cref attribute 'GetTzais72() nightfall' [C:\projects\zmanim\src\Zmanim\Zmanim.csproj]