tools: fix broken link hash

This typo results in a non-functional link in the WebCrypto docs. This
change fixes it.

PR-URL: #39426
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

tools/doc/type-parser.mjs

@@ -97,7 +97,7 @@ const customTypesMap = {
   'EcKeyImportParams': 'webcrypto.html#webcrypto_class_eckeyimportparams',
   'HmacImportParams': 'webcrypto.html#webcrypto_class_hmacimportparams',
   'AesImportParams': 'webcrypto.html#webcrypto_class_aesimportparams',
-  'Pbkdf2ImportParams': 'webcrypto.html#webcrypto_class.pbkdf2importparams',
+  'Pbkdf2ImportParams': 'webcrypto.html#webcrypto_class_pbkdf2importparams',
   'HmacParams': 'webcrypto.html#webcrypto_class_hmacparams',
   'EcdsaParams': 'webcrypto.html#webcrypto_class_ecdsaparams',
   'RsaPssParams': 'webcrypto.html#webcrypto_class_rsapssparams',