doc: improve DEP0090 text

Edit text for "DEP0090: Invalid GCM authentication tag lengths" for
clarity and branding. Invalid langths are "invalid" rather than
"considered invalid". Refer to "Node.js v11.0.0" rather than "node
v11.0.0".

PR-URL: #28097
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: Trott

doc/api/deprecations.md

@@ -1809,10 +1809,10 @@ changes:
 Type: End-of-Life
 
 Node.js used to support all GCM authentication tag lengths which are accepted by
-OpenSSL when calling [`decipher.setAuthTag()`][]. Beginning with node v11.0.0,
-only authentication tag lengths of 128, 120, 112, 104, 96, 64, and 32 bits are
-allowed. Authentication tags whose length is not included in this list are
-considered invalid in compliance with [NIST SP 800-38D][].
+OpenSSL when calling [`decipher.setAuthTag()`][]. Beginning with Node.js
+v11.0.0, only authentication tag lengths of 128, 120, 112, 104, 96, 64, and 32
+bits are allowed. Authentication tags of other lengths are invalid per
+[NIST SP 800-38D][].
 
 <a id="DEP0091"></a>
 ### DEP0091: crypto.DEFAULT_ENCODING