unnecessary dash in @param gives double-dash in docs

../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/net/CookieManager.html:<dd><code>requestHeaders</code> - - a Map from request header
../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/net/CookieHandler.html:<dd><code>requestHeaders</code> - - a Map from request header
../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/net/ResponseCache.html:<dd><code>rqstHeaders</code> - - a Map from request header
../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/net/ResponseCache.html:<dd><code>conn</code> - - a URLConnection instance that is used to fetch
../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/lang/Enum.html:<dd><code>name</code> - - The name of this enum constant, which is the identifier
../jdk.ref/build/macosx-aarch64/images/docs/api/java.base/java/lang/Enum.html:<dd><code>ordinal</code> - - The ordinal of this enumeration constant (its position