Bump Documenter compat to v1 (#918)

Author: jishnub

Project.toml

@@ -35,7 +35,7 @@ Aqua = "0.7"
 BandedMatrices = "0.16, 0.17, 1"
 BlockBandedMatrices = "0.11, 0.12"
 Calculus = "0.5"
-Documenter = "0.27"
+Documenter = "0.27, 1"
 DomainSets = "0.3, 0.4, 0.5, 0.6, 0.7"
 DualNumbers = "0.6.2"
 FFTW = "1"