Update raw efile docs to reflect 4 months of data instead of 2 years

[jason-upchurch]

Summary (required)

• Resolves Update API documentation to indicate raw data(/efile/ endpoints) is limited to 4 months #4045

Impacted areas of the application

List general components of the application that this PR will affect:

• docs.py

[codecov-io]

Codecov Report

Merging #4131 into develop will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #4131      +/-   ##
===========================================
+ Coverage    90.05%   90.08%   +0.02%     
===========================================
  Files           75       75              
  Lines         6778     6778              
===========================================
+ Hits          6104     6106       +2     
+ Misses         674      672       -2

Impacted Files	Coverage Δ
webservices/docs.py	100% <ø> (ø)	⬆️
webservices/rest.py	93.16% <0%> (+0.62%)	⬆️

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[dorothyyeager]

Approved from content team perspective.