doc: fix YAML errors due to bad conflict resolutions

Signed-off-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
PR-URL: #65921
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Richard Lau <richard.lau@ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: aduh95

doc/api/buffer.md

@@ -5345,6 +5345,7 @@ added:
   - v19.6.0
   - v18.15.0
 changes:
+  - version:
      - v26.8.0
      - v24.21.0
     pr-url: https://github.com/nodejs/node/pull/64504
@@ -5367,6 +5368,7 @@ added:
   - v19.4.0
   - v18.14.0
 changes:
+  - version:
      - v26.8.0
      - v24.21.0
     pr-url: https://github.com/nodejs/node/pull/64504

doc/api/fs.md

@@ -2985,6 +2985,7 @@ behavior is similar to `cp dir1/ dir2/`.
 <!-- YAML
 added: v0.1.31
 changes:
+  - version:
      - v26.8.0
      - v24.21.0
     pr-url: https://github.com/nodejs/node/pull/63851
@@ -3123,6 +3124,7 @@ If `options` is a string, then it specifies the encoding.
 <!-- YAML
 added: v0.1.31
 changes:
+  - version:
      - v26.8.0
      - v24.21.0
     pr-url: https://github.com/nodejs/node/pull/63851