close #6071, remove the mentions of deprecated docSeeSrcUrl (#15350)

config/nimdoc.cfg

@@ -55,13 +55,13 @@ doc.item.toc = """
 """
 
 # HTML rendered for doc.item's seeSrc variable. Note that this will render to
-# the empty string if you don't pass anything through --docSeeSrcURL. Available
+# the empty string if you don't pass anything through --git.url. Available
 # substitutaion variables here are:
 # * $commit: branch/commit to use in source link.
 # * $devel: branch to use in edit link.
 # * $path: relative path to the file being processed.
 # * $line: line of the item in the original source file.
-# * $url: whatever you did pass through the --docSeeSrcUrl switch (which also
+# * $url: whatever you did pass through the --git.url switch (which also
 #   gets variables path/line replaced!)
 doc.item.seesrc = """&nbsp;&nbsp;<a
 href="${url}/tree/${commit}/${path}#L${line}"

doc/docgen.rst

@@ -209,8 +209,6 @@ file.
 See source switch
 -----------------
 
-The ``docSeeSrcUrl`` switch is deprecated. Use:
-
 ::
   nim doc2 --git.url:<url> filename.nim
 
@@ -345,9 +343,8 @@ but can have up to four (additional columns are ignored). The content of these
 columns is:
 
 1. Mandatory term being indexed. Terms can include quoting according to
-   Nim's rules (eg. \`^\`).
-2. Base filename plus anchor hyperlink (eg.
-   ``algorithm.html#*,int,SortOrder``).
+   Nim's rules (e.g. \`^\`).
+2. Base filename plus anchor hyperlink (e.g. ``algorithm.html#*,int,SortOrder``).
 3. Optional human readable string to display as hyperlink. If the value is not
    present or is the empty string, the hyperlink will be rendered
    using the term. Prefix whitespace indicates that this entry is