[docs] Fix capitalization in references (#4515)

Authored by: christoph-heinrich

README.md

@@ -105,7 +105,7 @@ # NEW FEATURES
 
 * **Multiple paths and output templates**: You can give different [output templates](#output-template) and download paths for different types of files. You can also set a temporary path where intermediary files are downloaded to using `--paths` (`-P`)
 
-* **Portable Configuration**: Configuration files are automatically loaded from the home and root directories. See [configuration](#configuration) for details
+* **Portable Configuration**: Configuration files are automatically loaded from the home and root directories. See [CONFIGURATION](#configuration) for details
 
 * **Output template improvements**: Output templates can now have date-time formatting, numeric offsets, object traversal etc. See [output template](#output-template) for details. Even more advanced operations can also be done with the help of `--parse-metadata` and `--replace-in-metadata`
 
@@ -127,7 +127,7 @@ ### Differences in default behavior
 
 * The options `--auto-number` (`-A`), `--title` (`-t`) and `--literal` (`-l`), no longer work. See [removed options](#Removed) for details
 * `avconv` is not supported as an alternative to `ffmpeg`
-* yt-dlp stores config files in slightly different locations to youtube-dl. See [configuration](#configuration) for a list of correct locations
+* yt-dlp stores config files in slightly different locations to youtube-dl. See [CONFIGURATION](#configuration) for a list of correct locations
 * The default [output template](#output-template) is `%(title)s [%(id)s].%(ext)s`. There is no real reason for this change. This was changed before yt-dlp was ever made public and now there are no plans to change it back to `%(title)s-%(id)s.%(ext)s`. Instead, you may use `--compat-options filename`
 * The default [format sorting](#sorting-formats) is different from youtube-dl and prefers higher resolution and better codecs rather than higher bitrates. You can use the `--format-sort` option to change this to any order you prefer, or use `--compat-options format-sort` to use youtube-dl's sorting order
 * The default format selector is `bv*+ba/b`. This means that if a combined video + audio format that is better than the best video-only format is found, the former will be preferred. Use `-f bv+ba/b` or `--compat-options format-spec` to revert this
@@ -491,7 +491,7 @@ ## Video Selection:
     --match-filters FILTER          Generic video filter. Any "OUTPUT TEMPLATE"
                                     field can be compared with a number or a
                                     string using the operators defined in
-                                    "Filtering formats". You can also simply
+                                    "Filtering Formats". You can also simply
                                     specify a field to match if the field is
                                     present, use "!field" to check if the field
                                     is not present, and "&" to check multiple
@@ -1456,7 +1456,7 @@ # FORMAT SELECTION
  - `wa`, `worstaudio`: Select the worst quality audio-only format. Equivalent to `worst*[vcodec=none]`
  - `wa*`, `worstaudio*`: Select the worst quality format that contains audio. It may also contain video. Equivalent to `worst*[acodec!=none]`
 
-For example, to download the worst quality video-only format you can use `-f worstvideo`. It is however recommended not to use `worst` and related options. When your format selector is `worst`, the format which is worst in all respects is selected. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-S +size` or more rigorously, `-S +size,+br,+res,+fps` instead of `-f worst`. See [sorting formats](#sorting-formats) for more details.
+For example, to download the worst quality video-only format you can use `-f worstvideo`. It is however recommended not to use `worst` and related options. When your format selector is `worst`, the format which is worst in all respects is selected. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-S +size` or more rigorously, `-S +size,+br,+res,+fps` instead of `-f worst`. See [Sorting Formats](#sorting-formats) for more details.
 
 You can select the n'th best format of a type by using `best<type>.<n>`. For example, `best.2` will select the 2nd best combined format. Similarly, `bv*.3` will select the 3rd best format that contains a video stream.
 

yt_dlp/options.py

@@ -582,7 +582,7 @@ def _alias_callback(option, opt_str, value, parser, opts, nargs):
         metavar='FILTER', dest='match_filter', action='append',
         help=(
             'Generic video filter. Any "OUTPUT TEMPLATE" field can be compared with a '
-            'number or a string using the operators defined in "Filtering formats". '
+            'number or a string using the operators defined in "Filtering Formats". '
             'You can also simply specify a field to match if the field is present, '
             'use "!field" to check if the field is not present, and "&" to check multiple conditions. '
             'Use a "\\" to escape "&" or quotes if needed. If used multiple times, '