curl.1: use example.com more

Make (most) example snippets use the example.com domain instead of the
random ones picked and used before. Some of those were probably
legitimate sites and some not. example.com is designed for this purpose.

docs/curl.1

@@ -51,16 +51,16 @@ braces as in:
 
 or you can get sequences of alphanumeric series by using [] as in:
 
-  ftp://ftp.numericals.com/file[1-100].txt
+  ftp://ftp.example.com/file[1-100].txt
 
-  ftp://ftp.numericals.com/file[001-100].txt    (with leading zeros)
+  ftp://ftp.example.com/file[001-100].txt    (with leading zeros)
 
-  ftp://ftp.letters.com/file[a-z].txt
+  ftp://ftp.example.com/file[a-z].txt
 
 Nested sequences are not supported, but you can use several ones next to each
 other:
 
-  http://any.org/archive[1996-1999]/vol[1-4]/part{a,b,c}.html
+  http://example.com/archive[1996-1999]/vol[1-4]/part{a,b,c}.html
 
 You can specify any amount of URLs on the command line. They will be fetched
 in a sequential manner in the specified order.
@@ -68,9 +68,9 @@ in a sequential manner in the specified order.
 You can specify a step counter for the ranges to get every Nth number or
 letter:
 
-  http://www.numericals.com/file[1-100:10].txt
+  http://example.com/file[1-100:10].txt
 
-  http://www.letters.com/file[a-z:2].txt
+  http://example.com/file[a-z:2].txt
 
 When using [] or {} sequences when invoked from a command line prompt, you
 probably have to put the full URL within double quotes to avoid the shell from
@@ -647,24 +647,24 @@ transfer starts.
 You can also tell curl what Content-Type to use by using 'type=', in a manner
 similar to:
 
-\fBcurl\fP -F "web=@index.html;type=text/html" url.com
+\fBcurl\fP -F "web=@index.html;type=text/html" example.com
 
 or
 
-\fBcurl\fP -F "name=daniel;type=text/foo" url.com
+\fBcurl\fP -F "name=daniel;type=text/foo" example.com
 
 You can also explicitly change the name field of a file upload part by setting
 filename=, like this:
 
-\fBcurl\fP -F "file=@localfile;filename=nameinpost" url.com
+\fBcurl\fP -F "file=@localfile;filename=nameinpost" example.com
 
 If filename/path contains ',' or ';', it must be quoted by double-quotes like:
 
-\fBcurl\fP -F "file=@\\"localfile\\";filename=\\"nameinpost\\"" url.com
+\fBcurl\fP -F "file=@\\"localfile\\";filename=\\"nameinpost\\"" example.com
 
 or
 
-\fBcurl\fP -F 'file=@"localfile";filename="nameinpost"' url.com
+\fBcurl\fP -F 'file=@"localfile";filename="nameinpost"' example.com
 
 Note that if a filename/path is quoted by double-quotes, any double-quote
 or backslash within the filename must be escaped by backslash.
@@ -795,7 +795,7 @@ intended for a proxy.
 
 Example:
 
-\&# curl -H "X-First-Name: Joe" http://192.168.0.1/
+\&# curl -H "X-First-Name: Joe" http://example.com/
 
 \fBWARNING\fP: headers set with this option will be set in all requests - even
 after redirects are followed, like when told with \fB-L, --location\fP. This
@@ -828,7 +828,7 @@ time only.
 Perform an operation using a specified interface. You can enter interface
 name, IP address or host name. An example could look like:
 
- curl --interface eth0:1 http://www.netscape.com/
+ curl --interface eth0:1 https://www.example.com/
 
 If this option is used several times, the last one will be used.
 .IP "-j, --junk-session-cookies"
@@ -905,14 +905,14 @@ simply try to load .curlrc from the determined home dir.
 .nf
 # --- Example file ---
 # this is a comment
-url = "curl.haxx.se"
+url = "example.com"
 output = "curlhere.html"
 user-agent = "superagent/1.0"
 
 # and fetch another URL too
-url = "curl.haxx.se/docs/manpage.html"
+url = "example.com/docs/manpage.html"
 -O
-referer = "http://nowhereatall.com/"
+referer = "http://nowhereatall.example.com/"
 # --- End of example file ---
 .fi
 
@@ -1197,7 +1197,7 @@ multiple documents, you can use '#' followed by a number in the <file>
 specifier. That variable will be replaced with the current string for the URL
 being fetched. Like in:
 
-  curl http://{one,two}.site.com -o "file_#1.txt"
+  curl http://{one,two}.example.com -o "file_#1.txt"
 
 or use several variables like:
 
@@ -1721,11 +1721,11 @@ specifies what to upload and to where. curl also supports "globbing" of the -T
 argument, meaning that you can upload multiple files to a single URL by using
 the same URL globbing style supported in the URL, like this:
 
-curl -T "{file1,file2}" http://www.uploadtothissite.com
+curl -T "{file1,file2}" http://www.example.com
 
 or even
 
-curl -T "img[1-1000].png" ftp://ftp.picturemania.com/upload/
+curl -T "img[1-1000].png" ftp://ftp.example.com/upload/
 .IP "--tcp-nodelay"
 Turn on the TCP_NODELAY option. See the \fIcurl_easy_setopt(3)\fP man page for
 details about this option. (Added in 7.11.2)