Fixed generator history/deprecated documentation

[FrankElias77]

Fixes #1761

Risk

This PR makes no API changes.

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have run the unit tests with this PR
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).

Unit Tests

Generator only changes.

Core Tests

Generator only changes.

Core version / branch / commit hash / module tested against: N/A
HMI name / version / branch / commit hash / module tested against: N/A

Summary

Fixed the since label referring to deprecated instead of to when the rpc was added.

Changelog

Breaking Changes

• N/A

Enhancements

• N/A

Bug Fixes

• Fixed the generator since label to when rpc was deprecated instead to when an rpc is added

Tasks Remaining:

• N/A

CLA

• I have signed the CLA

[codecov]

Codecov Report

Merging #1766 into develop will increase coverage by 0.34%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1766      +/-   ##
===========================================
+ Coverage    82.68%   83.03%   +0.34%     
===========================================
  Files          419      420       +1     
  Lines        21507    22037     +530     
===========================================
+ Hits         17784    18298     +514     
- Misses        3723     3739      +16     

[NicoleYarroch]

One small fix requested.

[NicoleYarroch]

The history[0].since value does not appear to get printed here if a struct or enum was deprecated.

Reproduce

In SDLDisplayType I see:

 * @deprecated in SmartDeviceLink 5.0.0
 * @added in SmartDeviceLink 

1.0.0 is missing after @added in SmartDeviceLink

This is the RPC spec entry for DisplayType:

<enum name="DisplayType" deprecated="true" since="5.0">
    <description>See DAES for further infos regarding the displays</description>
    <element name="CID"/>
    <element name="TYPE2" />
    <element name="TYPE5" />
    <element name="NGN" />
    <element name="GEN2_8_DMA" since="3.0" />
    <element name="GEN2_6_DMA" since="3.0" />
    <element name="MFD3" since="2.0" />
    <element name="MFD4" since="2.0" />
    <element name="MFD5" since="2.0" />
    <element name="GEN3_8-INCH" internal_name="GEN3_8_INCH" since="3.0" />
    <element name="SDL_GENERIC" since="4.0" />
    <history>
        <enum name="DisplayType" since="1.0" until="5.0"/>
    </history>
</enum>