I think the naming-example in the "CamelCase style" section, which is "blockName-elemName_modName_modVal", should be blockName___elemName_modNamemodVal.
The change is "__" from "-" between block name and element name.
As written in CamelCase style section, that "The separators for names of blocks, elements, and modifiers are the same as in the standard scheme", then according to standard scheme the element name is separated from the block name by a double underscore (_\).
I think the naming-example in the "CamelCase style" section, which is "blockName-elemName_modName_modVal", should be blockName___elemName_modNamemodVal. The change is "__" from "-" between block name and element name. As written in CamelCase style section, that "The separators for names of blocks, elements, and modifiers are the same as in the standard scheme", then according to standard scheme the element name is separated from the block name by a double underscore (_\).