Update man with new --enable-network-proxy flag

Author: jgonzac

source/bear/man/bear.1

@@ -54,6 +54,12 @@ Force to use the dynamic linker method of \f[C]intercept\f[R] command.
 .TP
 --force-wrapper
 Force to use the compiler wrapper method of \f[C]intercept\f[R] command.
+.TP
+--enable-network-proxy
+Forward HTTP proxy environment variables (\f[C]http_proxy\f[R],
+\f[C]https_proxy\f[R], \f[C]grpc_proxy\f[R] and their capitalized
+versions) to \f[C]intercept\f[R] command.
+They are unset by default.
 .SH COMMANDS
 .TP
 \f[B]\f[CB]bear-intercept(1)\f[B]\f[R]

source/bear/man/bear.1.md

@@ -55,6 +55,11 @@ compilation database.
 \--force-wrapper
 :   Force to use the compiler wrapper method of `intercept` command.
 
+\--enable-network-proxy
+:   Forward HTTP proxy environment variables (`http_proxy`, `https_proxy`,
+    `grpc_proxy` and their capitalized versions) to `intercept` command.
+    They are unset by default.
+
 # COMMANDS
 
 `bear-intercept(1)`