Fix a typo

Author: DilumAluthge

base/initdefs.jl

@@ -390,7 +390,7 @@ options and their priority in package loading.
 See also [`Base.active_project`](@ref), [`Base.set_active_project`](@ref).
 """
 function active_manifest(project_file::Union{AbstractString,Nothing}=nothing, search_load_path::Bool=true)
-    project_file === @someting project_file active_project(search_load_path)
+    project_file === @something project_file active_project(search_load_path)
     project_file === nothing && return nothing
     return project_file_manifest_path(project_file)
 end