fix: Failing Scaladoc generation for 2.12

Author: jakubjanecek

build.sbt

@@ -518,6 +518,6 @@ lazy val sslConfig = project
 
 addCommandAlias(
   "check",
-  "scalafmtSbtCheck; scalafmtCheckAll; compile:scalafix --check; test:scalafix --check; site/mdoc; +missinglinkCheck; +test"
+  "scalafmtSbtCheck; scalafmtCheckAll; compile:scalafix --check; test:scalafix --check; +doc; +site/mdoc; +missinglinkCheck; +test"
 )
 addCommandAlias("fix", "compile:scalafix; test:scalafix; scalafmtSbt; scalafmtAll")

project/BuildSettings.scala

@@ -46,6 +46,7 @@ object BuildSettings {
     scalacOptions ++= List(
       "-Ywarn-unused" // necessary for Scalafix RemoveUnused rule (not present in sbt-tpolecat for 2.13)
     ) ++ (if (scalaVersion.value.startsWith("2.13")) List("-Wmacros:after") else List.empty),
+    Compile / doc / scalacOptions -= "-Xfatal-warnings",
     missinglinkExcludedDependencies ++= List(
       moduleFilter(organization = "ch.qos.logback"),
       moduleFilter(organization = "com.datastax.oss", name = "java-driver-core"),