Update fxtf spec URLs to the correct csswg URLs

[tristanphease]

Description

Following on from #43445, want to update the drafts.fxtf.org specification URLs that either give 404s or redirect when they should be the drafts.csswg.org URLs. Therefore do a search for most of the usages of it and replace them with the correct URL

Motivation

Update so people get the correct specification URL instead of a 404

Additional details

Info at https://drafts.fxtf.org/
Let me know if any of these shouldn't be updated for whatever reason, it was mostly a find replace but I did check all the new URLs loaded correctly

[github-actions]

Preview URLs (33 pages)

• /en-US/docs/MDN/Writing_guidelines/Page_structures/Page_types/CSS_module_page_template
• /en-US/docs/Web/CSS/Guides/Compositing_and_blending
• /en-US/docs/Web/CSS/Guides/Filter_effects
• /en-US/docs/Web/CSS/Guides/Masking
• /en-US/docs/Web/CSS/Guides/Motion_path
• /en-US/docs/Web/CSS/Reference/Properties/mask-border-mode
• /en-US/docs/Web/CSS/Reference/Properties/stroke
• /en-US/docs/Web/CSS/Reference/Values/color_value
• /en-US/docs/Web/SVG/Guides/SVG_filters
• /en-US/docs/Web/SVG/Reference/Attribute/amplitude
• /en-US/docs/Web/SVG/Reference/Attribute/clipPathUnits
• /en-US/docs/Web/SVG/Reference/Attribute/dx
• /en-US/docs/Web/SVG/Reference/Attribute/dy
• /en-US/docs/Web/SVG/Reference/Attribute/edgeMode
• /en-US/docs/Web/SVG/Reference/Attribute/exponent
• /en-US/docs/Web/SVG/Reference/Attribute/height
• /en-US/docs/Web/SVG/Reference/Attribute/in2
• /en-US/docs/Web/SVG/Reference/Attribute/in
• /en-US/docs/Web/SVG/Reference/Attribute/intercept
• /en-US/docs/Web/SVG/Reference/Attribute/kernelUnitLength
• /en-US/docs/Web/SVG/Reference/Attribute/operator
• /en-US/docs/Web/SVG/Reference/Attribute/preserveAspectRatio
• /en-US/docs/Web/SVG/Reference/Attribute/result
• /en-US/docs/Web/SVG/Reference/Attribute/slope
• /en-US/docs/Web/SVG/Reference/Attribute/specularExponent
• /en-US/docs/Web/SVG/Reference/Attribute/surfaceScale
• /en-US/docs/Web/SVG/Reference/Attribute/tableValues
• /en-US/docs/Web/SVG/Reference/Attribute/type
• /en-US/docs/Web/SVG/Reference/Attribute/values
• /en-US/docs/Web/SVG/Reference/Attribute/width
• /en-US/docs/Web/SVG/Reference/Attribute/x
• /en-US/docs/Web/SVG/Reference/Attribute/y
• /en-US/docs/Web/SVG/Reference/Attribute/z

Flaws (4)

Note! 32 documents with no flaws that don't need to be listed. 🎉

Found an unexpected or unresolvable flaw? Please report it here.

URL: /en-US/docs/Web/CSS/Reference/Properties/stroke
Title: stroke
Flaw count: 4

• broken_links:
  • Link /en-US/docs/Web/CSS/Reference/Values/url doesn't resolve
  • Link /en-US/docs/Web/CSS/Reference/Values/number-token doesn't resolve
  • Link /en-US/docs/Web/CSS/Reference/Values/url doesn't resolve
  • Link /en-US/docs/Web/CSS/Reference/Values/hash-token doesn't resolve

External URLs (6)

URL: /en-US/docs/Web/CSS/Reference/Properties/mask-border-mode
Title: mask-border-mode

• https://drafts.csswg.org/css-masking-1/ (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Web/CSS/Reference/Properties/stroke
Title: stroke

• https://drafts.csswg.org/fill-stroke-3/ (2 times) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Web/CSS/Reference/Values/color_value
Title: <color>

• https://drafts.csswg.org/compositing-1/ (1 time) (Note! This may be a new URL 👀)
• https://en.wikipedia.org/wiki/Alpha_compositing (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Web/SVG/Guides/SVG_filters
Title: SVG filters

• https://drafts.csswg.org/filter-effects-1/ (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Web/SVG/Reference/Attribute/type
Title: type

• https://drafts.csswg.org/filter-effects-1/ (3 times) (Note! This may be a new URL 👀)